Bushmaster ACR Owners Manual - Combat Rifle

Bushmaster® aCr® Operating and safety manual

™

TABLE OF CONTENTS

PAGE1 Warnings/Cautions/SafeHandling2 DangerousProcedures3 AboutYourBushmasterFirearm4-5 FirearmFeatures&Controls–

Identification/Location

6 ClearingYourFirearm7 PreventativeMaintenanceChecks8 SafetyFunctionCheck9 PreparingtoFire/LoadingaMagazine10 OperationofYourFirearm/Loading10 Operation/InsertingaMagazine11 Operation/ChamberingfromOpenBolt12-13 Operation/ChamberingfromClosedBolt14 Operation/StockAdjustments15 ImmediateActions-InCaseofTrouble16 RemedialActions17 BulletStuckintheBore18 BackUpSights

PAGE19 ZeroingYourSights19 25MeterZeroingProcedures20 Front&RearSightAdjustment21-25 DisassemblingYourFirearm26 Inspection/Cleaning/Lubrication27-28 DetailedCleaningTechniques29 CleaningtheUpperReceiver29 CleaningtheBolt&Carrier30 Cleaning/LubricatingtheEjector31 CleaningtheLowerReceiver31-35 ReassemblingYourFirearm36-37 MagazineDisassembly/Reassembly38-42 Re-ConfiguringFirearm43-47 Problems/Solutions48 MaintenanceinExtremeWeather49 PartsandAccessories50-51 ComponentVariations52-54 Warranty

P.O. Box 1479 • 999 Roosevelt Trail • Windham, Maine 04062 U.S.A.Sales: 1 800 998 7928 • Customer Service: 1 800 883 6229 • Tel. 207 892 3594 • Fax: 1 207 892 8068http://www.bushmaster.com • E-mail: info@bushmaster.com

PLEASE PRACTICE SAFE FIREARMS HANDLING!

WARNING:IF THIS FIREARM IS CARELESSLY OR IMPROPERLY HANDLED,UNINTENTIONAL DISCHARGE COULD RESULT AND COULD CAUSE INJURY, DEATH, OR DAMAGE TO PROPERTY.

CAUTION:CAREFULLY READ THIS INSTRUCTION MANUAL PRIOR TO LOADING AND FIRING THIS FIREARM. FOLLOW ALL INSTRUCTIONS ON THE PROPER HANDLING AND SAFE USE OF THIS FIREARM - LIVES MAY DEPEND ON IT!

CAUTION:USE ONLY CLEAN, DRY, HIGH QUALITY COMMERCIALLY MANUFACTURED AMMUNITION IN GOOD CONDITION which is appropriate to the 5.56mm NATO/223 Remington or 6.8mm Remington SPC caliber of your Firearm. Bushmaster does not recommend the use of remanufactured or hand loaded ammunition because it may damage your rifle and/or cause your firearm to malfunction.

WARNING:THIS FIREARM COULD CHAMBER A ROUND if it is dropped or jarred with a loaded magazine in place - either with the Bolt Carrier Assembly locked to the rear, or in its forward position.

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FUNDAMENTAL RULES FOR SAFE GUN HANDLING

• ALWAYS KEEP THE FIREARM POINTED IN A SAFE DIRECTION.

• NEVER LOAD THE FIREARM UNTIL READY TO USE.

• KEEP YOUR FINGER OFF THE TRIGGER UNTIL READY TO SHOOT.

WARNING: BEWARE OF DANGEROUS PROCEDURES

•BesureCamPinisinstalledintheBoltGroup.Ifitisn’t,yourFirearmcanstillfireandCOULD MALFUNCTION CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

•WhenusingaBlank Firing Attachment, NEVER FIRE ANYTHING EXCEPT BLANKS!Foryoursafety,werecommendthevisible,militarystyleblankfiringattachment(BFIPart#RAY-008).

•Ifyourfirearmstopsfiringwithaliveroundinthechamberofahotbarrel(amisfire),REMOVE THE ROUND FAST! However,ifyoucannotremoveitwithin10seconds,removemagazineandwait15minuteswith the Firearm pointing in a SAFE DIRECTION! Thiswayyouwon’tbehurtbyapossibleround“cooking-off”(i.e.therounddetonatingjustfromtheheatofthebarrel).Keepyourfaceawayfromtheejectionportwhileclearingahotchamber.

•Ifyourboltfailstounlock,andyoutrytofreeitbytappingthebuttstockonthegroundwhilepullingonthecharginghandle,keep yourself clear of the Muzzle and the Firearm pointed down range.

•Ifthereiswaterinthebarrel,donotfiretherifle.IT COULD MALFUNCTION CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

•Pullthecharginghandletothereartobreakthesealtoensurethewaterwillrunofffromthechamberthroughtheejectionportarea.

•Ifanoticeabledifferenceinsoundorrecoilisexperienced,STOP FIRING! Eitherconditioncouldindicateanincompletepowderburnand/orabulletorotherobstructionstuckinthebore.

•TaketheFirearmtoaqualifiedgunsmithandhaveobstructionsremoved.•NOTE: WiththeBoltCarrierAssemblylockedtotherear,orinitsforwardposition,iftheFirearmis

droppedorjarredwithaloadedmagazineinplace,aliveroundcouldbechambered.

2ALWAYS PRACTICE SAFE FIREARMS HANDLING!

ABOUT YOUR BUSHMASTER RIFLE…

ThisOperatingManualcoverstheBushmaster ACR (“ACR”)whichischamberedin5.56mmNATO/223Remingtonand6.8mmRemingtonSPCammunition.Itisagaspiston,air-cooledshoulderfired,magazine-fedFirearm,thatisSemi-Automaticinoperation(i.e.,asingleroundwillfireeachtimethetriggerispulled).

•TheACRBarrelsarecoldhammerforgedandholdthetightesttoleranceallowed.Theyarerifledwitheithera1turnin7”forheaviergrainweightbulletsor1turnin9”forlighterbulletswitharighthandtwist–6landsandgrooves.

•TheACRisoperatedbyaregulated,short-strokeGasPistonSystemwhicheliminateshotgasfrombeingin-troducedintotheUpperandLowerReceivers.TheRegulatorcanbesetforUnsuppressedorSuppressedfire.

•TheACRisamulti-caliberplatformandiscapableoftransitioningtoarangeofcaliberssimplybyswappingtheBarrelAssemblyandBolt,usingtheappropriateMagazine.SomecalibersmayrequireanalternatelowertoacceptdifferentsizedMagazines.

•AllACRUpperandLowerReceiversareeasilyopenedforcleaningandinspection.

•TheUpperReceiverismadeofextrudedAluminumandtheLowerReceiverismadeofaproprietarycompositepolymer.

•MostACRmodelsfeaturefullyadjustablerearsights/elevationadjustablefrontsights.

•TheBoltGrouplocksintotheBarrelExtensionwith7lockinglugs.

•AllmodelscanbeconfiguredwitheitheraFixedStockor7positionTelescoping/FoldingStock.

•Allmodelsfeatureverticalpistolgripsanddetachablemagazines.Magazinecapacityis30roundsstandard(dependingonStateRegulations),butallAR-15/M-16typemagazinesofcapacitiesfrom5to40roundswillfittheACRandfunctioninit.

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Firearm Features & Controls - Identification/Location…

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AdjustableCheekPiece

FixedHigh-ImpactCompositeA-FrameStockwithRubberButtpad

MBUSRearFlipSight MBUSFrontFlipSight

GasRegulatorSelector

MonolithicMIL-STD-1913TopRail

BrassDeflector

PistolGrip

BoltCatch/Release

30RoundPMAG

Compensator

MagazineReleaseButton

CompositePolymerHandGuard

Trigger

SafetySelector

Firearm Features & Controls - Identification/Location… (cont’d.)

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M4ProfileBarrel

ChargingHandleTakedownPin

StockReleasePinQuickDetachSlingCoupler QuickDetach

SlingCoupler

HandGuardRetainingPin

MagazineReleaseButton

BoltCatch/Release

SlingLoops

SafetySelectorPivotPin

NOTE: ATF Regulations require a minimum barrel length of 16" oncommerciallyavailableriflesandcarbines.This16"lengthcanbeacombinationofbarrelandpermanentlyfixed(pinned&weldedover)muzzlebrake/flashsuppressoraslongastotallengthequals16".

CLEARING YOUR FIREARM…

ALWAYS FOLLOW THE RULES OF SAFE FIREARM HANDLING. First,assumethefirearmyouarehandlingisloaded,andthenproceed-accordingtothefollowingsteps-toCLEAR YOUR FIREARM . . .

1.PointFirearminaSAFE DIRECTION! PlaceSafetySelectorLeveronSAFE.

NOTE: If the Firearm is not cocked, the Safety Selector Lever cannot be pointed toward SAFE.

2.PressMagazineReleaseButtonandpullMagazinedowntoremove.

3.TolockBoltopen,pullChargingHandlerearward.PressupwardontheBoltCatchandallowBolttomoveforwarduntilitengagestheBoltCatch.Ifyouhaven’tbefore,nowplaceSafetySelectorLeveronSAFE.

SafetySelectorLeveronSAFE.

4.VisuallyandphysicallycheckthattheChamberisclear.

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PREVENTATIVE MAINTENANCE CHECKS & SERVICES…

CHECK BEFORE YOU FIRE!

2.RetracttheBolttoensurefreemovementoftheBoltCarrier.

3.PerformSafetyFunctionCheck(nextpage)toensurethatSafetySelectorLeverworksproperly.

4.EnsuretheGasRegulatorissetto“U”forunsupressedfire;iffiringwithasilencermounted,setGasRegulutorto“S”forsuppressedfire.

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NOTE: GasRegulatormustbesetcorrectlyforeitherunsuppressedorsuppressedfire;IfnotsetcorrectlytheFirearmcouldmalfunctioncausingpersonalinjury,propertydamageordeath.

WARNING! NeveroperateFirearmwithGasRegulatorsetinbetweenthe“U”and“S”settings.

ALWAYS FOLLOW THE RULES OF SAFE FIREARM HANDLING.First,assumetheFirearmyouarehandlingisloaded,andthenproceed-accordingtothefollowingsteps-toCLEAR YOUR FIREARM...

1.ChecktoseethatthereisNO EXCESSIVE OIL intheBore.Ifthereis,swabitoutwithapatchandthecleaningrod.ALWAYS CLEAN A NEW FIREARM BEFORE FIRING. WARNING! IftheFirearmisfiredwithoil-orwater-inthebarrel,excessivepressurewillbecreatedandtheFirearmcouldmalfunctioncausingpersonalinjury,propertydamageordeath.

SAFETY FUNCTION CHECK…

UNLOAD FIREARM - REMOVE MAGAZINE - CHECK CHAMBER1.RemoveMagazineifinstalled.PullChargingHandleassemblytorear.CheckthatChamberis

clear.LettheBoltandBoltCarrierclose.DonotpullTrigger.LeaveHammerincockedposition.

WARNING! IfFirearmfailsanyofthefollowingtests,continueduseoftheFirearmcouldcauseamalfunctioncausingpersonalinjury,propertydamageordeath.2.PlaceSelectorLeverinSAFE position,pointrifleinasafedirection,

andpulltheTrigger.THE HAMMER SHOULD NOT FALL.3.PlaceSelectorLeverinFIRE position.PulltheTrigger.

THE HAMMER SHOULD FALL.

NOTE: Forpurposesofthefollowingcheck,“SLOW”isdefinedasonefourthtoonehalfthenormalrateoftriggerrelease.

4.HoldTriggertotherear,pullChargingHandletotherearandreleaseChargingHandle.ThenreleasepressureontheTriggerwithaslow,smoothmotion,withouthesitationsorstops,untiltheTriggerisfullyforward.

AN AUDIBLE CLICK SHOULD BE HEARD - THE HAMMER SHOULD NOT FALL.

5.RepeattheFIREpositiontestFIVE TIMES.TheFirearmmustnotmalfunctionduringanyofthesefivetests.PulltheChargingHandletotherearonelasttimeandreleaseforward.

6.PlacetheSelectorLeverinSAFEposition.PulltheTrigger.THE HAMMER SHOULD NOT FALL.IftheFirearmmalfunctionsduringanyofthesefivetests,havetheFirearmcheckedbyaqualifiedgunsmith.

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PREPARING TO FIRE - LOADING A MAGAZINE…

1.Useonlyquality5.56mm/223RemingtonAmmunitioninyourFirearm(or6.8mmRemingtonSPCifapplicable).ExamineeachCartridge-particularlyaroundtheprimer.Lookfordents,scratches,andothersignsofdamage.

DO NOT LOAD DAMAGED AMMUNITION!

2.WiththeMagazinefacingforward,asshownintheillustration,placeaRoundbetweentheFeedLipsoftheMagazinewiththeBulletTipforward.PushtheRounddownuntilitisheldbytheMagazineFeedLips.

3.Ifnecessary,givetheRoundaslightpushbackwardtoseatitagainsttheinsidebackedgeoftheMagazineFeedLips.PlacenextRoundontopofthepreviousRoundandrepeatstepsuntildesirednumberofRoundsareloadedintoMagazine.

CAUTION! SafeFirearmsHandlingdictatesthatyouONLY LOAD LIVE AMMUNITION INTO YOUR RIFLE WHEN YOU ARE ABOUT TO SHOOT.

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OPERATION OF YOUR FIREARM… LOADING

CAUTION: ALWAYS POINT THE MUZZLE IN A SAFE DIRECTION!1.WiththeHammercocked,place

SelectorLeveronSAFE.2.OpenBoltandcheckFiringChamber.

MakesureitisCLEAR!

1.ReturnChargingHandletoforward,lockedposition.PushMagazineupintoMagazineWelluntilMagazineCatchengagesandholdstheMagazine.

2.SlapupwardsonMagazinebottomtomakesureitisseatedcorrectly.

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INSERTING A MAGAZINE…

OPERATION OF YOUR FIREARM… (cont’d.)

CHAMBERING A ROUND FROM AN OPEN BOLT…

NOTE: TheMagazinemaybeinsertedintotheFirearmwiththeBoltAssemblyOpenorClosed.

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2.TAPtheChargingHandleforwardwiththeheelofyourhandtoensurethattheBoltisfullyforwardandlocked.

1.PresstheBoltCatchdownward.Boltshouldspringforward.ThiswillchamberaroundfromtheMagazine.

FIREARM IS NOW READY TO BE AIMED AND FIRED!

OPERATION OF YOUR FIREARM… (cont’d.)

CHAMBERING A ROUND FROM A CLOSED BOLT…1.WithaMagazineintheFirearm,pulltheChargingHandlefullytoRear.Thenreleasethe

ChargingHandle–allowingtheBolttospringforward–chamberingthefirstround.

NEVER “Ride”orpushtheChargingHandleforward.Letitmoveforwardonitsown.

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2.TAPtheChargingHandleforwardtoensurethattheBoltisfullyforwardandlocked.

NOTE: IfFirearmisnotgoingtobefiredimmediately,makesuretheSelectorLeverisstillonSAFE .

FIREARM IS NOW READY TO BE AIMED AND FIRED!

OPERATION OF YOUR FIREARM… (cont’d.)

AimatTarget–PullTrigger–Release.TheFirearmwillautomaticallyejectthespentCartridgeandchamberanotherRoundinpreparationforthenextshot.ThecycleofpullingtheTriggertoshoot,andtheFirearmautomaticallyreloading,canbecontinueduntiltheMagazineisempty.NOTE:AfterthelastRoundisfired,theBoltCarrierwilllockintherearposition.YoucanthenpushtheMagazineReleaseButtontodropouttheemptymagazine,insertafreshMagazine,releasetheBoltCatch,andanewRoundwillbeautomaticallychamberedinpreparationforthenextfiringsequence.WARNING… IF A NOTICEABLE DIFFERENCE IN SOUND OR RECOIL IS EXPERIENCED, STOP FIRING AND IMMEDIATELY CHECK THE FIREARM FOR OBSTRUCTIONS. AN OBSTRUC-TION MAY CAUSE A MALFUNCTION CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.Eitherconditioncouldindicateanincompletepowderburnand/orabulletstuckinthebore.RetracttheBoltslowlyandremovethefiredcartridgecase.CleartheFirearmandcheckforunburnedpowdergrainsintheReceiverorBore,andforaBulletstuckintheBore(SeePage17).Cleanoutanyunburnedpowderbeforeresumingfiring.IfaBulletisstuckintheBore,donotattempttoremoveit.TaketheFirearmtoaqualifiedGunsmith.

CONDITION: FirearmisnowLoaded,aRoundischambered,andSafetySelectorshouldbeonSAFE.

ToFIREtheFirearminSEMI-AUTOMATIC MODE(oneRoundfiredwitheachpulloftheTrigger),movetheSafetySelectorLeverfromSAFE toFIRE.

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CAUTION: ALWAYS POINT THE MUZZLE IN A SAFE DIRECTION!

OPERATION OF YOUR FIREARM… (cont’d.)

STOCK ADJUSTMENTS1.ToadjusttheCheekPieceheight,slidetheCheekPiecerearwardtounlock.

2.LiftCheekPiecetotheelevatedposition.

3.SlideCheekPieceforwardtolockintoplace.

4.ReverseactioninordertoreturnCheekPiecetothelowerposition.

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OPTIONAL – FOLDING/TELESCOPING STOCK1.Toadjustthelengthofpull,depressboth(leftandright)

StockExtensionButtonsandslidestockforwardorback.

2.Tofold,depresstheStockReleaseLatchandfoldtheStockforwardontherighthandside.

3.ToreturntheStock,pulltotherearuntiltheStocklocksintoplace.

NOTE: Stockisheldopenbydetentbutdoesnotlockopen.NOTE: TheFirearmcanbefiredwiththestockinthefoldedpositionwithclearanceforejectingcartridges.

2.

3.

IMMEDIATE ACTIONS — IN CASE OF TROUBLE!

IF YOUR FIREARM STOPS FIRING: Perform the following IMMEDIATE ACTIONS…Remembertheword“SPORTS”

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1.SlapupontheMagazinetoensureagoodlockupintheLowerReceiver.

2.PulltheChargingHandleallthewaybackandhold.

3.ObservetheejectionoftheCaseorCartridge,checkChamberforanyobstruction.

4.ReleasetheChargingHandleandlettheBoltspringforward.

5.TaptheChargingHandletoassisttheBoltforwardtoensuretheBoltislocked.

6.Squeezethetriggertofire.

REMEDIAL ACTIONS…

1.IfyourFirearmstillfailstofireafterperformingImmediateActionSteps1through5onpreviouspage,checkagainforajammedcartridgecase.

2.Ifacartridgecaseisinthechamber,openthereceivers,removetheboltcarrier,andtrytotapoutthecasewithacleaningrod.

IF FIREARM STILL FAILS TO FIRE CHECK THE TROUBLESHOOTING SECTION IN THIS MANUAL OR TAKE THE FIREARM TO A QUALIFIED GUNSMITH.

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WARNING: IF YOUR FIREARM STOPS FIRING WITH A LIVE ROUND IN THE CHAMBER OF A HOT BARREL, REMOVETHE ROUND IMMEDIATELY. However,ifyoucannotremoveitwithin10seconds,removetheMagazineandwait15minuteswiththeFirearmpointinginasafedirection(alwayscheckthatthe“SAFE”directionremainssafeduringthattime).Thiswayyouandthosearoundyouwon’tgethurtbythepossibilityofaround“cookingoff”.

KEEP YOUR FACE AWAY FROM THE EJECTION PORT WHILE CLEARING A HOT CHAMBER.

BULLET STUCK IN THE BORE…

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WARNING: IF AN AUDIBLE “POP” OR REDUCED RECOIL IS EXPERIENCED DURING FIRING, IMMEDIATELY CEASE FIRE: Then,1.RemovetheMagazine. 2.LocktheBolttotherear.

4.Visuallyinspectand/orinsertaCleaningRodintotheBoretoensurethereisnotaBulletstuckintheBore.

DO NOT APPLY THE “IMMEDIATE ACTIONS” DESCRIBED ON PREVIOUS PAGES. IF A BULLET IS STUCK IN THE BARREL OF THE FIREARM, DO NOT TRY TO REMOVE IT. TAKE THE FIREARM TO A QUALIFIED GUNSMITH.

3.PlacetheSelectorLeveronSAFE.

BACK UP SIGHTS

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TheFrontSightPostisthreaded-allowingittobemovedupordownforElevationAdjustmentswhen“Zeroing”theRearSight(see“ZeroingYourSights”onnextpage).OncetheRearSightisZeroed,theFrontSightPostshouldnotbemoved.

REAR BACK UP SIGHTTheRearBackUpSightfeaturestwoaperturesandwhennotusedcanbefoldeddownflat.Toreturntotheuppositionpresseitherthesidetabs.

NORMAL RANGE APERTURE:ThesmallerApertureisthedefaultsettingandisusedformostfiringsituations,optimizedfor100-300meters.

SHORT RANGE APERTURE: RotatetheNormalRangeApertureforwardanddowntorevealtheShortRangeAperture.Thisapertureisusedforrangesof0-100meters,allowingalargerfieldofview.

WhennotinusetheFrontandRearSightscanbefoldeddownflat.Toreturnelevatesightspressdowneitherthesidetabsordownontheforwardportionofeithersighttoengagethespringloadedrelease.Toremovethesights,loosenandremovetheLockingBoltandguidethesightsforwardofftheendoftheMIL-STD-1913PicatinnyTopRail.

ZEROING YOUR SIGHTS…

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FollowthestepsbelowtoestablishaZeroat25meters.YourMBUSTypeRifleSightswillthenbesetwitha300-meterbattlesightzero.Withthisprocedure,onlytheFrontSightPostandRearSightWindageKnobareadjustedsothatyoucanhityourPointofAimat300meters.

25 METER ZEROING PROCEDURES…

1.Placeanappropriate25MeterPaperSightingTarget25metersdownrangeandfollowthestepsbelowtoestablisha“battlesight”zero.DonotmovetheFrontSightPostatthistime.Itwassetatthefactoryandshouldbeverycloseto“Zero”.

(Bushmaster Sighting-In Targets, Part# QP-015K - see Bushmaster Catalog or Website)

2.Thesmaller(unmarked)RearSightApertureshouldbeintheUPposition.CentertheRearSightbyturningtheWindageKnobleftorright.Thiscreateswhatiscalled“MechanicalZeroWindage”.

3.Checkthatyourfieldoffireisclear,andthatitissafetoshoot.Carefullyaimandfireagroupofthreeshotsatthecenterofthetargetbullseye.

4.Inspectyourtarget-ifyourshotgroupisnotinthecenterofthebullseye,thesquaresonthetargetsheetwillhelpyoucalculatetherequired“clicks”necessarytomoveyournextshotgrouptowardthebullseye.

(Remember!-anychangesinelevationaretobemadebymovingthefrontsightpost)

ZEROING YOUR SIGHTS… (cont’d.)

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5.Ifyouneedtoraiseyournextshotgrouptogetclosertothebullseye,rotatetheFrontSightPostclockwiseoneclick.AFrontSightAdjustmentTool(Part#RAY-005-seeBushmasterCatalogorWebsite)isrecommendedforthisbutnotnecessary–thesightcanbeadjustedwiththetipofaBulletasshownatright.Oneclickwillmovethebulletstrikepointoneverticalsquareonthetargetsheet.

6.Ifyouneedtoloweryournextshotgroup,rotatetheFrontSightPostcounterclockwise.(Oneclick-asbefore–equalsonesquare.)ChangesinWindagearemadewiththeWindageKnobontheRearSight.Tomovetheshotgrouptotheleft,turntheWindageKnobcounter-clockwise.Tomovetheshotgrouptotheright,turntheWindageKnobclockwise

7.Carefullyaimandfireanothergroupatthecenterofthetargetbullseye.RepeatSteps5and6asrequiredtogetyourshotgroupsintothebullseye.

8.Onceyourshotgroupisontarget,yourSightsarezeroed,or“calibrated”.

Elevation Adjustment Table a.SightRadius:14.1in. b.BulletStrikeAdjustment: Impact Distance 0.485in./click 25m 1.939in./click 100m 5.817in./click 300m

Windage Adjustment Table a.SightRadius:14.1in. b.BulletStrikeAdjustment: Impact Distance 0.323in./click 25m 1.293in./click 100m 3.878in./click 300m

DISASSEMBLING YOUR FIREARM…

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1.CLEARYOURFIREARM!(asdescribedonPage6).DisconnecttheSlingforconvenience.

2.PushtheRearTakedownPin(aBulletTipcanhelp)asfarasitwillgo.PivotUpperReceiverfromLowerReceiver.

5.PushtheChargingHandlefullyforwardtodisconnecttheActuatorfromtheBoltCarrier.RemoveBoltCarriertotherear.

4.SeparateUpperandLowerReceivers.

3.PushinPivotPin(aBulletTipcanhelp).

NOTE: PivotPinintheLowerReceiverandTakedownPinintheUpperReceiverare“captivated”-meaningthattheyareheldinbytheirDetentsandSpringssotheycannotfalloutandgetlost.

DISASSEMBLING YOUR FIREARM… (cont’d.)

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6.RemovetheActionSpringAssemblyfromtheBoltCarrierbypressinginward(towardfrontoftheBolt)andtwistingcounter-clockwiseuntiltheslotsonthecarrierarein-linewiththeprongsonthefrontoftheActionSpringAssemblyGuideandthenremovetheActionSpringAssembly.

7.RemoveFiringPinRetainingPin.ABulletTipcanhelppushitoutoftheBoltCarrier.

8.RemoveFiringPinandFiringPinSpringoutofrearofBoltCarrier.

DISASSEMBLING YOUR FIREARM… (cont’d.)

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9.RemoveCamPinbyturningBoltCarrieronthesideandtappingoppositesideofBoltCarrier.CamPinshouldfallout.

10.RemoveBoltAssemblyfromBoltCarrierbypullingstraightout.

12.RemoveExtractorwithSpring.

11.RemoveExtractorPinbypushingoutwithapunchorthetipofaBullet.

NOTE: PressrearofExtractortocheckSpringfunction.CAUTION: ExtractorSpringmaypopoutandgetlost!

DISASSEMBLE USING STEPS 11 AND 12 ONLY WHEN DIRTY OR DAMAGED

DISASSEMBLING YOUR FIREARM… (cont’d.)

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4.WiththeBarrelPlungerdepressed,turntheBarrelLockingLever.counter-clockwiseuntilitstops.

5.PulltheBarrelAssemblyforwarduntilitreleasesfromtheTrunnion.

REMOVING THE BARREL ASSEMBLY1.PullCharging

Handleandlocktotherear.

2.RemoveHandGuardbypushingtheHandGuardRetainingPinthroughasfarasitwillgoandslidetheHandGuardforward.

3.LowertheBarrelLockingLeveranddepresstheBarrelPlunger.

DISASSEMBLING YOUR FIREARM… (cont’d.)

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3.RemovePistonRodandPistonSpringthroughthefrontoftheGasBlock.

NOTE: TheGasPistonSystemcanbedisassembledwiththeBarrelattachedorremovedfromtheUpperReceiver.

DISASSEMBLING THE GAS PISTON SYSTEM

2.PullGasRegulatorstraightouttoremove.

1.DepressRegulatorPlungerandrotateuntilitisfacingtowardthebarrel.

BUSHMASTER DOES NOT RECOMMEND ANY FURTHER DISASSEMBLY. ANY FURTHER DISASSEMBLY MUST BE PERFORMED BY A QUALIFIED GUNSMITH.

INSPECTION — CLEANING — LUBRICATION…

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AFTER FIRING YOUR FIREARM, cleanitassoonaspossibletomakethejobeasierandtoavoidallowingthedevelopmentofanycorrosion.When your Firearm has not been fired youshouldcleanitatleastonceortwiceayearifyouliveinatemperateclimate,orasoftenasonceaweekinatropicalclimate.

If you get your Firearm wet, cleanitassoonaspossibletoavoidtheonsetofcorrosionorrust.

UseahighqualityFirearmcleaningkitthatincludesacleaningrod;swabholder;cottonflannelborepatches;pipecleaners;asmalltoothbrush;brasswirebristleboreandchamberbrushesandaCleaner/Lubricant/Preservative(CLPinArmyterminology).

After you have disassembled the Firearm, thoroughly clean, inspect and lubricate all parts according to the techniques described on following pages.

Cleaning Kit with Patch Holder, Bore & Chamber Brushes

A Quality Gun Oil,Cleaner and Preservative

Cotton Flannel Bore Patches

PLUS, anoldtoothbrushforcleaningpartsanddislodgingdirtbuild-up,andpipecleanersorQ-tipsforcleaninghardtoreachareas.

THE BUSHMASTER ACR IS DESIGNED TO OPERATE WITHOUT LUBRICATION AND AFTER CLEANING, ALL ACTION PARTS SHOULD BE WIPED DRY.

DETAILED CLEANING TECHNIQUES…

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NOTE: Theproceduresbelowdescribecleaningwithastandardmilitaryissuetypemulti-piecerodcleaningkit.Othercommercialcleaningkitsmayincludealternatecleaninginstructionswhichmaybejustaseffective.

CLEANING THE BORE: TheboreofyourACRriflehasLandsandGroovescalledrifling.RiflingmakesthebulletspinveryfastasitmovesdowntheBoreanddownrange.Itisdifficulttopushanew,stiffBoreBrushthroughtheBore.Youwillfinditmucheasier,andmoreeffective,topull your Bore Brush through the Bore.Also,becausethebrushwillcleanbetterifthebristlesfollowthegrooves(thisiscalledtracking),youwanttheBoreBrushtobeallowedtoturnasyoupullitthrough.

To make cleaning the Bore easier, you may remove the barrel from the Upper and replace once the Bore and Chamber are cleaned. The zero ofthe barrel will not be lost.

ALWAYS CLEAN FROM THE CHAMBER TOWARD THE MUZZLE. Followthesesteps:

1.AttachthreeRodSectionstogetherbutleaveeachoneabouttwoturnsshortofbeingtight.AttachthePatchHolderbutleaveittwoturnsshortoftightalso.

2.PointMuzzledown.HoldtheUpperReceiverorBarrelAssemblyinonehandwhileinsertingtheendoftheRodwithPatchHolderattachedintotheChamber.GuidetheRodcarefullythroughtheBore.

CAUTION: DonotlettheRodoritsthreadedendscratchtheLiningoftheBoreorFiringChamber.About2-3inchesoftheRodshouldprotrudeoutoftheMuzzle.

3.AttachtheHandleSectionoftheCleaningRodtotheendoftheRodstickingoutoftheMuzzle,andswabouttheBorewithapatchmoistenedwith“CLP”.

DETAILED CLEANING TECHNIQUES… (cont’d.)

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4.RemovePatchHolderandattachBoreBrush(leavingittwoturnsshortoftight).

5.PulltheBrushthroughtheBoreandouttheMuzzle.YoushouldbeabletoseetheRodtwistingasyoupullit-thisistheBrush“tracking”intherifling.

NEVER reversethedirectionoftheBoreBrushwhileitisintheBore.

6.Afteronepull,takeoffthehandlesectionandrepeattheprocess.Afterthreeorfourpulls,thethreerodsectionsandtheBoreBrushmaybecomescrewedtightlytogether.Loosenthemupandrepeattheprocess.

7.SendapatchthroughtheBoreoccasionallytohelpcleanoutthecrudthatthebrushisgettingloose.JustreplacetheBoreBrushwiththeRodTip(PatchHolder)andawetpatch.Pullitthrough.Ifyouleavetherodslooseagain,thepatchwill“track”intheriflingasbefore.Butremember,alwayshavetheBorewet with cleaner beforetryingtopullabrushthrough.

1.UseChamberBrushsoakedwithCLPtocleantheinsideoftheGasBlock.

2.RemovecarbonandcleantopofbarreljustforwardoftheGasBlockwherehotgasisportedoutoftheGasRegulator.

3.WipedownPistonRodandPistonSpring.

4.Lubricateallpartsandwipedry.

CLEANING THE GAS REGULATOR AND PISTON SYSTEM:

CLEANING THE UPPER RECEIVER…

29

1.Usinga“CLP“typeproduct,cleanallareas(insideandout)ofPowderFouling,CorrosionandDirt.

Never useawirebrushoranytypeofabrasivetocleantheAluminumUpperReceiverorBearingRails-you’llscratchanddamagethefinish.AToothbrushisgoodforlooseninganydirtbuildup,andwon’tscratchtheReceiver.2.Wipeallcomponentscleananddry,andinspectforexcessivewear,corrosionormechanical

damage.HaveaqualifiedGunsmithreplaceanywornordefectivepartsbeforefiringagain(orcontactBushmasterat1-800-998-7928forpartsneeds.)

1.CleanandinspectBolt,CamPin,FiringPin,FiringPinSpring,FiringPinRetainingPinandActionSpringAssemblythoroughly.

CHECK THE BOLT: Lookforcracksorfractures,especiallyintheCamPinholearea.InspectBoltFace-Boltswithanypittingextendingintothefiringpinholeshouldbereplaced.CHECK THE CAM PIN: Ifitiscracked,orchipped,itshouldbereplaced.NOTE:CamPincanonlybeinstalledinBoltfromoneside-soEjectorwillbepositionedcorrectly.CHECK THE FIRING PIN: Ifitisbent,cracked,toobluntedortoosharp,itshouldbereplaced.

CHECK THE FIRING PIN RETAINING PIN: Ifitisbent,orbadlyworn,itshouldbereplaced.IfO-ringisbroken,wornormissingitshouldbereplaced,thoughtheFirearmwillstillfunctionsafely.

WIPE ALL PARTS DRY BEFORE REASSEMBLING BOLT CARRIER. WARNING: IF THECAM PIN IS MISSING, DO NOT FIRE THE FIREARM – IT COULD MALFUNCTION CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

CLEANING THE BOLT, BOLT CARRIER & COMPONENTS...

CLEANING THE UPPER RECEIVER… (cont’d.)

30

CHECK THE EXTRACTOR AND EXTRACTOR SPRING:IftheExtractorischipped,orhasbrokenedgesintheareaofthelipthatengagesthecartridgerim,itshouldbereplaced.CheckthattherubberinsertisinsidetheExtractorSpring.CleanoffanyCarbonbuilduporpowderresidue.

NOTE:ThedesignoftheEjectormakesitsdisassemblyforcleaningsomewhatimpractical(i.e.wedon’trecommendit).MakesureyourBushmasterejectsemptycasesefficientlybyfollowingthesestepsonamonthlybasis(morefrequentlyiffiringblanks).

1.WiththeBoltremovedfromtheBoltCarrierandtheExtractorinstalled,holditasshown,anddribbleafewdropsofCLParoundtheEjectortoformapuddle.

2.TakeafiredordummycaseandplaceitunderthelipoftheExtractor.Witharockingmotion,pressthecasedownagainsttheEjector.SincetheEjectorisspringloaded,someresistancewillbefelt.Pressonthecaseuntilitstopsagainsttheboltface.Easeoffwithyourthumbslightlyandpressdownagain.Repeatseveraltimes.ReplacetheCLPfrequently.OncethespringactionoftheEjectorissmoothandstrong,dryoffanyexcesslubricant.

CLEANING/LUBRICATING THE EJECTOR…

CLEANING THE BOLT, BOLT CARRIER & COMPONENTS…

Extractor

Rock Empty CaseAgainst Ejector To Lubricate

Ejector

CLEANING THE LOWER RECEIVER…

31

1.CleanallareasofPowderFouling,Corrosion,DirtandRust.Again,neveruseawirebrushoranytypeofabrasivetocleantheproprietarycompositepolymerLowerReceiver.

2.Stocksmayrequirecleaningasnecessaryandshouldbecleanedwithmilddetergentandwater.Drystockorletairdryafterithasbeencleaned.

1.InsertPistonRodandPistonSpringthroughGasBlockandPistonRodthroughGuideBlock.

3.AttachtheBarrelAssemblybyguidingtheBarrelExtensionintotheTrunnion.ThepistonwillpassthroughanopeningintheTrunnion.

2.InsertGasRegulatorandrotatetoeither“U”or“S”

REASSEMBLING YOUR FIREARM…

REASSEMBLING YOUR FIREARM… (cont’d.)

32

4.GuidetheBarrelLockHandletotherightuntilitengageswiththeTrunnion.OnceseatedintotheTrunnion,turnthebarrellockingleverclockwiseuntilthereisapositivestop(youmayhavetodepresstheBarrelPlungertostartrotation).TheBarrelLockingRingwillmakeaudibleclicksasthetorqueisbeingappliedforproperinstallation.

5.InstallHandGuardovertheBarrelAssemblyandpushHandGuardRetainingPinclosedtolockintoplace.

REASSEMBLING YOUR RIFLE… (cont’d.)

33

6.InsertBoltintoBoltCarrier.TwistintopositionsoCamPincanbeinserted(rememberCamPincanonlybeinstalledinBoltfromoneside,soifitdoesn’tfitrightaway,twisttheBolt180°andtryagain).

7.OnceCamPinisinserted,aligntheridgeontheheadoftheCamPinsoitisparallelwiththeBolt.

WARNING: THE CAM PIN MUST BE INSTALLED IN THE BOLT GROUP. IF IT ISN’T, YOUR FIREARM CAN STILL FIRE AND COULD MALFUNCTION CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

8.InsertFiringPinintoFiringPinSpring;DropinandseatFiringPinandSpringintoBoltCarrier.

9.LightlypresstheFiringPinintotheBoltCarrier;whileholding,insertFiringPinRetainingPin.

REASSEMBLING YOUR FIREARM… (cont’d.)

34

10.InsertActionSpringAssemblyintotheBoltCarrierbypressinginward(towardfrontoftheBolt)andtwistingclockwiseuntilthetabsonthefrontoftheActionSpringAssemblyGuideareinlinewiththeRetainingSlot.

NOTE: TheRecoilLugatthebackoftheActionSpringAssemblyshouldbepointinguptowardthetopoftheUpperReceiver.

NOTE:AfterinsertingFiringPinRetainingPin,FiringPinshouldnotfalloutwhenBoltCarrierAssemblyisturnedupsidedown

REASSEMBLING YOUR FIREARM… (cont’d.)

35

CAUTION: BUSHMASTER DOES NOT RECOMMEND THE PRACTICE OF SWAPPING BOLTS BETWEEN DIFFERENT FIREARMS. DOING SO COULD RESULT IN MALFUNCTION CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

11.InsertBoltCarrierassemblyintotheUpperbyaligningthenotchesontheCarrierwiththeBearingRailsinsidetheUpper.MoveforwarduntilthelockinglugsengagetheTrunnion.

12.TojoinUpperandLowerReceivers,positionPivotPinLugofUpperReceiverintoslotatfrontofLowerReceiverandpushPivotPinintoplace.

CAUTION: Always placetheSafetySelectorLeveronSAFEbeforepivotingtheUpperReceivertoaclosedpositionontheLowerReceiver.

13.AfterReceiversareclosed,pushinTakedownPin.

14.Toensureproperreassembly,performthesafetyfunctioncheck(Seepage8)priortoanyattempttofiretheRifle.

IftheSling,oranyotherAccessorieswereremovedforcleaningormaintenance,theyshouldbereattachednow.

SLING REATTACHMENT…

MAGAZINE DISASSEMBLY/REASSEMBLY

36

1.UnloadMagazinefully.

2.TurnMagazinebaseup.PushdownandforwardonFloorplatewithabulletheadorotherappropriatedevice.

CAUTION: Floorplateisunderpressure,soensurecareuponremoval.Alwaysweareyeprotection.

MAGAZINE DISASSEMBLY/REASSEMBLY… (cont’d.)

37

3.PullgentlyonMagazineSpringandFollowertoseparatefromMagazinebody.

4.WipedirtfromBody,MagazineSpringandFollower;thenlightlylubricateSpring.

5.OrientFollowerandMagazineSpringtoMagazineBodyandcarefullyinsertthroughbottomofMagazineBody.

6.SlideFloorplateoverliponbottomofMagazineBodyandcontinueslidingFloorplateovertabsuntilrearofFloorplatecatchesonMagazineBody.

RE-CONFIGURING THE FIREARM

38

STOCK CHANGE

1.PushtheRearTakedownPin(aBullettipcanhelp)asfarasitwillgo.PivotUpperReceiverfromLowerReceiver.

2.PushtheStockRetainingPinout.3.Slidestockupwardtoseparatefromlowerreceiver.

RE-CONFIGURING THE FIREARM (cont’d.)

39

4.Replaceorinsertnewstockdownwardintocavity.

5.PushStockRetainingPinclosed.

6.PivotUpperReceiverandLowerReceivertogetherandpushRearTakedownPinclosed.

STOCK CHANGE

1.RemoveHandGuardbypushingtheHandGuardRetainingPinthroughasfarasitwillgoandslidetheHandGuardforward.

HAND GUARD CHANGE

RE-CONFIGURING THE FIREARM (cont’d.)

40

2.InstallalternateHandGuardovertheBarrelAssemblyandpushHandGuardRetainingPinclosedtolockintoplace.

1.LocateChargingHandleReleaseButton.

2.Whileusingapunchorbullettip,depressReleaseButtonandslidetotherearwhilepullingtheChargingHandleawayfromtheUpperReceiver.

CHARGING HANDLE

RE-CONFIGURING THE FIREARM (cont’d.)

41

3.StillholdingtheReleaseButtontotherear,swapChargingHandletotheoppositesideandre-insertorinsertalternateChargingHandle.

1.RemoveMagazine.

2.UnloadandclearFirearm.

3.RemoveHandGuardbypushingtheHandGuardRetainingPinthroughasfarasitwillgoandslidetheHandGuardforward.

4.LowertheBarrelLockingLeveranddepresstheBarrelPlunger.

5.WiththeBarrelPlungerdepressed,turntheBarrelLockingLevercounter-clockwiseuntilitstops.

6.PulltheBarrelAssemblyforwarduntilitreleasesfromtheTrunnion.

CHARGING HANDLE

CALIBER CONVERSION

RE-CONFIGURING THE FIREARM (cont’d.)

42

7.RemovetheBoltCarrieranddisassemble(Seepage22).

8.SelectproperboltheadforcaliberFirearmisbeingconvertedto.

9.InstallBoltintoBoltCarrier.

10.ReassembleBoltCarrier.

11.EnsureBoltCarrierisremovedfromactionorislockedtotherear.

12.Selecttheproperbarrelforthecaliberrifleisbeingconvertedto.

13.GuidetheBarrelExtensionintotheTrunnion.ThepistonwillpassthroughanopeningintheTrunnion.

14.GuidetheBarrelLockHandletotherightuntilitengageswiththeTrunnion.OnceseatedintotheTrunnion,turnthebarrellockingleverclockwiseuntilthereisapositivestop(youmayhavetodepresstheBarrelPlungertostartrotation).TheBarrelLockingRingwillmakeaudibleclicksasthetorqueisbeingappliedforproperinstallation.

15.InstallHandGuardovertheBarrelAssemblyandpushHandGuardRetainingPinclosedtolockintoplace.

16.InsertBoltCarrierintotheUpperbyaligningthenotchesontheBoltCarrierwiththeBearingRailsinsidetheUpper.MoveforwarduntiltheLockingLugsengagetheBarrelExtension.

17.SelecttheproperMagazineandfollowinstructionsforoperatingtheFirearm(Seepage10).

CALIBER CONVERSION

PROBLEMS/SOLUTIONS…

43

Problem: Check For: What To Do:Firearm won’t fire SelectorLeveronSAFE PutitonFIRE ImproperAssembly AssembleCorrectly- FiringPin Retaining Pin Goes In Back Of Large Shoulder On Firing Pin

CorrectBarrelInstallation RemoveandRe-Attach

BoltNotLockedInChamber TapForwardAssist

TooMuchOilInFiringPinRecess WipeOutWithPipeCleaner

DefectiveAmmunition RemoveandDiscard

TooMuchCarbonOnFiringPin Clean OrInFiringPinRecess

PROBLEM: FIREARM WON’T FIRE

PROBLEMS/SOLUTIONS… (cont’d.)

44

Problem: Check For: What To Do:Bolt won’t unlock DirtyorBurredBolt Clean,orSeeQualifiedGunsmith Barrelnotproperlyinstalled Removeandre-attach

CamPinNotInstalled InstallCamPin

Problem: Check For: What To Do:Won’t extract BrokenExtractorSpring SeeQualifiedGunsmith

DirtyOrCorrodedAmmo RemoveStuckRound PushOutWithCleaningRod

CarbonInChamber CleanChamber

FoulingOrCarbonInExtractor CleanExtractor RecessOrLip

FrozenExtractor RemoveandClean

RestrictedMovementofBolt Remove,CleanandLube CarrierGroup

PROBLEM: BOLT WON’T UNLOCK

PROBLEM: WON’T EXTRACT

PROBLEMS/SOLUTIONS… (cont’d.)

45

Problem: Check For: What To Do:Won’t feed DirtyorCorrodedAmmo Clean DirtyMagazine Clean

DefectiveMagazine Replace

TooManyRoundsinMagazine TakeOutExcess

MagazineNotFullySeated RemoveMagazineand CleanMagazineWell

Barrelnotproperlyinstalled Removeandre-attach

Problem: Check For: What To Do:Double feed DefectiveMagazine Replace

Problem: Check For: What To Do:Won’t chamber DirtyorCorrodedAmmo Clean

PROBLEM: WON’T FEED

PROBLEM: DOUBLE FEED

PROBLEM: WON’T CHAMBER

PROBLEMS/SOLUTIONS… (cont’d.)

46

Problem: Check For: What To Do:Won’t unlock DamagedAmmo Replace CarbonInChamber Clean

Dirt,CorrosionorCarbonBuildUp CleanLugs inBarrelLockingLugs

Barrelnotproperlyinstalled Removeandre-attach

Problem: Check For: What To Do:Short recoil PistonBindinginGasBlock CleanGasBlock

AlignmentofGuideBlock Re-alignandtighten

BrokenGasPistonSpring Replacepart

ProperlyinsertedAction RealignActionAssemblySpring AssemblySpring

ProperSettingofGasRegulator SetCorrectlyforUnsuppressedor Suppressedfire

BentGasPiston Replacepart

PROBLEM: WON’T UNLOCK

PROBLEM: SHORT RECOIL

PROBLEMS/SOLUTIONS… (cont’d.)

47

Problem: Check For: What To Do:Bolt fails to lock FaultyMagazine Replaceafter last round ProperSettingofGasRegulator SetCorrectlyforUnsuppressedor Suppressedfire

Problem: Check For: What To Do:Selector level binds DirtorSandUnderTrigger Clean

ProperAssembly RemoveandRe-Assemble

Problem: Check For: What To Do:Selector lever SelectorLeverDetentPlate SeeQualifiedGunsmithspins freely EngagementtoHammerSpring

Problem: Check For: What To Do:Bolt carrier “hung up” DoubleFeed RemedialAction BoundGasPiston Clean,CheckforGuideBlockAlignment

PROBLEM: BOLT FAILS TO LOCK AFTER LAST ROUND

PROBLEM: SELECTOR LEVER SPINS FREELY

PROBLEM: BOLT CARRIER “HUNG UP”

PROBLEM: SELECTOR LEVER BINDS

MAINTENANCE IN EXTREME WEATHER…

48

EXTREME COLD: CleanandlubricateFirearminawarmroomwithFirearmatroomtemperature.DonotlayawarmFirearmdirectlyonsnoworice.MovingFirearmfromcoldintowarmthwillcausecondensationwhichcouldkeepFirearmfromfunctioning.

HOT WET CLIMATES: CleanandlubeFirearmmorefrequentlyinmoistclimates.InspecthiddensurfacesofBoltandCarrierAssembly,UpperReceiver,andChamber/BarrelExtension(LockingLugs),andLowerReceiverforrustorcorrosion.AlsopaycloseattentiontotheSpringLoadedDetentsontheFirearm.Wipeoffanyhand/fingerprintsontheFirearmastheycanacceleratetheonsetofrustorcorrosion.

HOT, DRY CLIMATES: Takeextracarewithcleaningandlubricationasriflewillbeexposedtoblowingsandandfinedust,andextremetemperatureshifts(hotinthedaytime,freezingatnight).Corrosionislesslikelytoformonmetalpartsinadryclimate.Firearmshouldnotrequireanylubrication.

HEAVY RAIN: DO NOT FIRE THE FIREARM IF WATER IS PRESENT IN THE BARREL: ExcesspressurecancausetheFirearmtoexplode.

ALWAYS drainanywaterfromBarrelpriortofiring.DrytheBorewithaSwabandCleaningRodifwet.

PARTS AND ACCESSORIES…

49

ThereareamultitudeofwaysfortheBushmasterACRtobeupgradedorcustomizedforyourspecificuse.Avarietyofbarrellengths,profiles,caliberconversionkits,alternatestocks,handguards,andcontrolpartsareavailable.ForacompletelistingofreplacementpartsandaccessoriespleaserefertotheBushmasterParts&AccessoriesCatalogorgoonlineatwww.bushmaster.com/acr.

Toplaceanordergoonlineorcall1-800-998-7928totalkwithaCustomerServiceRepresentative.

OnlyauthorizedBushmasterpartsandaccessoriesarerecommendedforusewithyourACR.

COMPONENT VARIATIONS…

50

ThismanualisintendedtoinstructtheBushmasterACROperatorinallnecessaryaspectsofMaintenance,Disassembly,Reassembly,OperationandTroubleshootingparticulartothisfirearm.

WithintheBushmasterACRlineofproductstherecanbeinfinitevariationsofBarrelLengthandType,StockType,LowerReceivers,HandGuardsandSights.

COMPONENT VARIATIONS…

51

TheBushmasterACRyouown,orareusing,mayvaryinappearancefromthephoto-graphsandillustrationsinthisManual,buttheconcepts,proceduresandpracticesrecommendedinthisManualareuniversaltotheBushmasterACR.

LIMITED ONE YEAR WARRANTY…

52

BushmasterFirearmsarewarrantedtobefreefromdefectsinmaterialsandworkmanship.AnysuchdefectofwhichBushmasterFirearmsInternational,LLCisgivenwrittennotice,asprovidedbelow,withinoneyearandtendaysfromthedateoffirstpurchasebyacustomerwillberemediedbyBushmasterFirearmsInternational,LLC.ThiswarrantyisgrantedbyBushmaster Firearms International, LLC, P.O. Box 1479, 999 Roosevelt Trail, Windham, ME 04062.

ToinitiateaWarrantyclaim,callBushmasterCustomerService(tollfree:8:30AMto7:00PME.S.T.-MondaythruFriday-1-800-883-6229)togeta“ReturnMerchandiseAuthorization”(RMA)number.Warrantyclaimsshouldstate(inwriting)themodelandserialnumberofthefirearmconcerned,adescriptionofthedifficultyexperienced,andthedateofpurchase.Thefirearmconcernedshouldbeshipped(transportationchargesprepaid),totheWarranty Service Department, Bushmaster Firearms International, LLC, 999 Roosevelt Trail, Windham, ME 04062.Firearmshipmentshouldbeinsuredbytheowner,asBushmaster Firearms International, LLC will accept noresponsibility for loss or damage in transit.

ShippingandinsurancechargesforthereturnofafirearmtoitsownerwillbepaidbyBushmasterFirearmsInternational,LLCiftherelatedclaimisaproperclaimforwarrantywork.

LIMITED ONE YEAR WARRANTY…

53

Under no circumstances shall Bushmaster Firearms International, LLC be responsible for incidental or consequential damages with respect to economic loss or injury to property, whether as a result of express or implied warranty, negligence or otherwise.Somestatesdonotallowtheexclusionoflimitationofincidentalorconsequentialdamages,sotheabovelimitationmaynotapplytoyou.BushmasterFirearmsInternational,LLCwillnotberesponsiblefortheresultsofcarelesshandling,unauthorizedadjustments,defective,lowquality,reloaded,orimproperammunition,corrosion,neglect,ordinarywearandtear,orunreasonableuse.Furthermore,theliabilityofBushmasterFirearmsInternational,LLCunderthiswarrantyshallbelimitedsolelytotheobligationtorepairorreplacethefirearm,andtopaytransportationandinsurancechargesforreturnofthefirearmtoowner.

NOTE:HandgunsandlonggunsareclassifiedasFIREARMSorDANGEROUSWEAPONS.GunsaresurrenderedbyBushmasterFirearmsInternational,LLCwiththeexpressunderstandingthatitassumesnoresponsibilityforresalehandlingunderlocallawsandregulations.

PLEASE PRACTICE SAFE FIREARMS HANDLING!

54

WARNING: IF THIS FIREARM IS CARELESSLY OR IMPROPERLY HANDLED, UNINTENTIONAL DISCHARGE COULD RESULT AND COULD CAUSE PERSONAL INJURY, DEATH, OR DAMAGE TO PROPERTY.

CAUTION: CAREFULLY READ THIS INSTRUCTION MANUAL PRIOR TO LOADING AND FIRING THIS FIREARM. FOLLOW ALL INSTRUCTIONS ON THE PROPER HANDLING AND SAFE USE OF THIS FIREARM - LIVES MAY DEPEND ON IT!

CAUTION: USE ONLY CLEAN, DRY, HIGH QUALITY COMMERCIALLY MANUFACTUREDAMMUNITION IN GOOD CONDITION whichisappropriatetothe5.56mmNATO/223Remingtoncaliberofyourfirearm.Bushmasterdoesnotrecommendtheuseofremanufacturedorhandloadedammunitionbecauseitmaydamageyourrifle.

WARNING: THIS FIREARM COULD CHAMBER A ROUND ifitisdroppedorjarredwithaloadedmagazineinplace-eitherwiththeBoltCarrierAssemblylockedtotherear,orinitsforwardposition.

A SAFETY NOTE REGARDING LEAD... Dischargingfirearmsinpoorlyventilatedareas,cleaningfirearms,orhandlingammunitionmayresultinexposuretolead,asubstanceknowntocausebirthdefects,reproductiveharm,andotherseriousphysicalinjury.Haveadequateventilationatalltimes.Washhandsthoroughlyafterexposure.

ThisBushmasterOperatingandSafetyInstructionManualshouldalwaysbekeptwithyourBushmasterFirearm,andincaseofsaleortransfer,shouldbepassedontosubsequentowners.

Model:_______________________________________________________________ SerialNumber:________________________________________________________ SoldTo:______________________________________________________________ DateSold:_____________________________________________________________

NOTES

55

NOTES

56

Bushmaster Firearms International, LLC

999 Roosevelt Trail • P.O. Box 1479 • Windham, ME 04062

www.bushmaster.com

For more product information, visit www.bushmaster.com/signin

Printed in U.S.A.Bushmaster is a trademark of Bushmaster Firearms International, LLC.Magpul is a trademark of Magpul Industries Corp. BFI-MAN-ACR