CORE15 OWNERS MANUAL

Safety RulesSafety SelectorLoading the MagazineLoading Magazine into RifleChambering a RoundChambering a Round (with Carrier in Battery) Unloading the RifleUse of Bolt CatchLocking Bolt Carrier to RearForward AssistDisassembly of RifleRemoving Bolt and CarrierRemoving the Charging HandleGas SettingsDisassembly and Adjustment of PistonSchematicsCleaning InstructionsWarranty and RegistrationNotes

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Table of Contents

core rifle systems advises thorough cleaning of any rifle before use.STOP

Disclaimers: CORERifleSystemswillnotberesponsibleorliable,directlyorindirectly,inanywayforanyloss,damage,injuryordeathincurredbyitsfirearms.UserassumesfullresponsibilitywhenusinganyCORERifleSystemRifle.

Misuseorcarelessnessmayresultinseriousinjuryand/ordeathtotheuserorbystanders.CORERifleSystems,canandwillinnowayberesponsibleformisuseorcarelessusebytheuserofitsfirearms.

Chambering,firing,orattemptingtochamberorfirearoundnotintendedforuseinthisfirearmisextremelydangerousandcanresultinseriousinjuryand/ordeathtotheuserorbystanders.Useonlynewammunition,markedwiththesamemarkingsasthefirearmthatitisintendedtobeusedin.

Safety Rules:1. ALWAYSkeepthegunpointedinasafedirection.2. ALWAYSkeepyourfingeroffthetriggeruntilreadytoshoot.3. ALWAYSkeepthegununloadeduntilreadytouse.4. ALWAYSassumeeveryfirearmisloaded.5. ALWAYSknowyourtargetandwhatisbehindit.6. ALWAYSkeepfirearmsandammunitionoutofthereachof children.

WARNING:

WARNING:

WARNING:

Safety Selector: Proper use of the safety selector is crucial to the safe use of the firearm. The safety selector is located on the left side of the gun, just above the pistol grip. To ensure the weapon is on “SAFE” the pointer on the safety selector will be pointed at the insignia showing a bullet with a circle and a line through it. To disengage the safety selector to allow the gun to fire, rotate the safety selector lever to the insignia with a bullet without a line through it. This will allow the gun to fire.

NEVER take the weapon off “SAFE” until you are ready to shoot.

Above picture shows “SAFE”

Above picture shows “FIRE”

WARNING:

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Loading the MagazineToloadthemagazine,insertammunitiononecartridgeatatimeverticallyintothemagazine.Ensurethateachcartridgeseatstotherearofthemagazine,ascartridgesthatarenotcorrectlyseatedmaycausecartridgesthereafternottobedepressedintothemagazine.Oncethemagazinehasbeenfullyloaded,itwillnotreadilyallowmoreroundstobeinserted.Donotattempttooverloadthemagazineasthismaybend/dentcartridgesandposeahazardtotheuserwhenattemptingtofirethedamagedcartridge.

Loading the RifleToloadtherifle,firmlyinsertaloadedmagazine,withthebulletspointedtowardsthefrontofthefirearm,intothemagazinewelllocateddirectlyinfrontofthetrigger.Makesurethemagazineiscompletelyseatedbystrikingthebottomofthemagazinewithanupwardmotionwiththepalmofthehand.

Load magazine firmly into magazine well.

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Chambering a Round: (With the Bolt Carrier Locked in the Rear Position)Oncealoadedmagazinehasbeeninsertedintothemagazinewell,depresstheboltcatchlocatedontheleftsideofthefirearm.Thiswillallowtheboltcarriertomoveforwardintobatterytherebyloadingthefirearm.

Chambering a Round: (With the Bolt Carrier in Battery)Oncealoadedmagazinehasbeeninsertedintothemagazinewell,usethecharginghandlelocatedontheupperreceivertochargetheweapon.Todothis,graspthecharginghandlewithtwofingers,oneoneachsideoftheupper,andpullcharginghandletotherear.Oncethehandlehasreacheditsfullrearwardtravel,release,allowingthecharginghandleandboltcarriertomovebackforwardintobattery,andtherebyloadthefirearm.

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Bolt catch is Shown Above.

Pull Charging Handle to rear

4PAGEUnloading the Rifle:Placethefirearmon“SAFE”.Usethemagazinereleasebuttonlocatedontherightsideofthefirearmtoreleasethemagazine.Oncethemagazineasbeenremoved,pullthecharginghandletotherearofthefirearm,bringingthecharginghandletoitsfulldistanceback.Thiswillallowthecartridgechamberedinthefirearmtobeextractedandejectedsafelyfromthefirearm.

Use of Bolt Catch:Whenthemagazinehasbeenemptied,theboltwilllockintherearwardposition.Thiswillbedoneautomaticallybytheboltcatchtovisuallyshowtheuserthatthefirearmisoutofammunition.Toreloadtheweapon,ensurethefirearmison“SAFE”.Thenremovetheemptymagazinebyutilizingthemagazinereleasebuttonontherightsideoftheguninfrontofthetrigger.Oncetheemptymagazinehasbeenremoved,aloadedmagazine

canbeinsertedintothemagazinewell.Withthefullmagazinefirmlyseatedinthemagazinewell,pushtheboltcatchlevertoreleasetheboltcarrier,therebychamberingaround.

Pull Charging Handle to rear

Bolt Catch is shown above.

Magazine Release Button

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Locking Bolt Carrier to Rear:Theboltcarrierwilllocktotherearpositiononcethemagazineisempty.Thisallowstheusertovisuallyverifythattherifleisindeedoutofammunition.Inordertolocktheboltbackwithoutamagazineinserted,itisnecessarytomanipulatetheboltcatchleverawayfromtheupperwhileholdingtheboltintherearwardpositionwiththecharginghandle.Atthatpointgentlyeasethecharginghandleforwardensuringtheboltcaughtonthecatch.

Forward Assist:Iftheboltcarrierfailstotravelallthewayforward,theForwardAssistcanbeusedtoseattheboltcompletely.Tousethisfeature,ensurethattherifleison“SAFE”,andremainspointedinasafedirection.ThenswiftlystriketheForwardAssistinaforwardmotionwiththepalmofthehandtopushthecarrierforwardandcompletelyintobattery.

Bolt Catch is shown above.

Forward Assist is shown above

Disassembly of the Rifle:Todisassembletherifleensurethatitison“SAFE”andvisuallychecktomakesuretheweaponisunloadedbypullingthecharginghandletotherearoftheweaponandvisuallyinspectingthechambertomakesuretherifleisclearedofanycartridges.Allowtheboltcarrierandcharginghandletoreturntotheforwardposition.

Pushthetakedownpintotherightallowingtheupperreceivertopivotdownexposingthetriggergroupandthebackoftheboltcarrier.Toseparatetheupperreceiverfromthelowerreceiver,pushthepivotpin,locatedinthefrontofthelowerreceiver,totheright.Thiswillallowtheupperreceivertoberemovedfromthelowerreceiver.

Removing Bolt and Carrier:Withthegundisassembled,pullthecharginghandletowardstherearjustenoughtounlockthecharginghandlelock.Grasptherearoftheboltcarrierandpullittowardstherearofthereceiver.Theboltcarriershouldslideeasilyouttherearofthereceiver.

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Removing the Charging Handle:Oncetheboltandboltcarrierhasbeenremovedfromtheweapon,pullthecharginghandletotherearofthereceiver,oncerearmotionhasstopped,allowthecharginghandletodropdownintothereceiver,thenremoveitfromthereceiver.

Piston Assembly Gas Settings: (Applies to Gas Piston Rifles Only)

Ourrifle’spistonsystemcomeswithagasblockthathasafourpositionadjustablegasplug,whichallowstheshootertoadjusttheamountofgaspressureallowedtocyclethesystemandaccessthedriverodforcleaningandmaintenance.Thefoursettingsarepositionedatthe9o’clock,12o’clock,1o’clockand3o’clockpositionswhilefacingthefrontofthegasblock,andarecalled“Removal”,“High”,“Low”,and“Off”.

The9o’clock,or“Removal”,positionsunlocksthegasplugfromthegasblock.Thispositionwillallowyoutoremovethegaspluganddriverodforcleaningandmaintenance.Oncedone,replacethegaspluganddriverodintothegasblockatthe9o’clockposition.Depressthedetentbuttonandrotatetothedesiredgassettingforfiring.

The12o’clock,or“High”,positionopensthegasplugcompletely,allowingthefirearmtousethetotalamountofgaspressure.Withthisposition,youmayfiresemi-automaticastheriflewasoriginallydesignedto.Ifthefirearmisfunctioningcorrectly,youwillbeexpellingemptycasingsbetweenthe2and4o’clockpositions(roughlyaroundtherightshoulder)fromthereceiverconsistently. 7PAGE

The1o’clock,or“Low”,settingisrecommendedforusewiththesoundsuppressor.Asuppressorincreasestheamountofbackpressurefromtheroundexitingthebarrel.Thisincreasedpressurecausesanincreaseintherateoffire.Byturningthegasplugtothe1o’clockposition,theincreasedamountofbackpressurewillnotenterintothepistonchamber,allowingtheARtofunctionattherateoffireitwasdesignedtohave.Thelastpositionisthe3o’clock,or“Off”,position.Thiseffectivelystopsthefirearmfromcyclingitsaction.Whiletheroundinthechamberwillstillfire,allthegasesareventedoutthefrontofthepistonchamberandwillrequiretheshootertomanuallyworktheactionoftheARbypullingbackonthecharginghandle.Essentially,thisturnstheARintoabolt-actiongun.Thispositionisusedmostlybythosewithsuppressorsthatdonotwantthesoundoftheactionoverpoweringthesoundssuppressedbythesuppressor.Itisalsousedwitha.22LRconversionkitbyremovingthedriverodandturningthegasplugtotheoffposition.

Disassembly of Piston:Todisassemblethepistonsystemforcleaning,ensurethegunison“SAFE”andvisuallyinspecttomakesurethechamberisempty.Rotatethedetentknobtothe9o’clockposition,andpullthepistonandrodtowardstheendofthemuzzle.Thiswillremovethepistonandrodfromthegun.

DONOTremovethegasblockfromthebarrelasthegasblockisspaced,linedup,andtorquedtoprecise

tolerances.Removingandincorrectlyreinstallingthegasblockcancauseseriousdamagetotherifle,and/orinjuryandinseriouscircumstances,death,totheuserand/orbystanders.

WARNING:

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Upper Receiver, Bolt & Bolt Assembly:

Buttstock Assembly

1.FiringPin2.BoltGasRings 3.Bolt4.ExtractorSpring5.ExtractorSpringInsert6.Extractor7.Ejector8.EjectorSpring9.EjectorRollPin10.ExtractorPin11.BoltCarrier12.CamPin13.FiringPinRetainingPin14.BoltCarrierKey15.BoltCarrierKeyScrew

BUFFERASSEMBLY

#40507

CARBUFFERSPRING#40510

6POSITIONTELESTOCKASSEMBLY

COLORBUTTSTOCKTUBELOCK

#1040

RECEIVEREXTENSIONNUT

#1032

6POSITIONCARBINERECEIVEREXTENSION

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CORE15

BUFFERRETAINER

BUFFERRETAINER SPRING

TAKEDOWNPINSPRING

TAKEDOWNPINDETENT

TAKEDOWNPIN

SAFETYDETENT

SAFETYDETENTSPRING

STANDARDGRIP

LOCKWASHER

STANDARDGRIPSCREW

HAMMERANDTRIGGERPINS

MAGAZINECATCHBUTTON

MAGAZINECATCHSPRING

TRIGGERGUARDPIVOT

ROLL PIN

TRIGGERGUARD

ASSEMBLY

TRIGGERSPRING

TRIGGER

DISCONNECTOR

DISCONNECTORSPRING

PIVOT PIN

PIVOT PINSPRING

PIVOT PINDETENT

MAGAZINECATCH

BOLTCATCHSPRING

BOLTCATCHPLUNGER

BOLTCATCHROLLPIN

BOLTCATCH

SAFETYSELECTORLEVER

HAMMERSPRING

HAMMERWITHJPIN

LOWERRECEIVER#100258

CORE15 Semi-Auto Lower Receiver

Cleaning Instructions:ItisrecommendedtouseBreach-to-Muzzle®guncleaningproductsbyOtisTechnologyforpropercareandmaintenanceofCORERifles.

1.Runapatchwithsolvent:Usingapatch,createtheappropriatesizedswab.Addacoupleofdropsofsolventandpullthepatchfromthebreechtothemuzzle.

PRIORTOCLEANINGBESURETHEFIREARMISUNLOADED!

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Cleaning Upper Receiver, Bolt Carrier, & Charging Handle:Wipeallareasthatcomeincontactwiththeboltcarrierorcharginghandledownwitharagmoistenedwithoil.Thiswillcleanandlubricatethereceiveratonetime.Useasmallbrushtobrushawayanypowderresiduethatmaybebuiltuparoundthefeedrampsofthebarreltoensuresmoothfeedingofammunitionfromthemagazineintothechamber.Wipetheboltcarrierdownwithanoilmoistenedragtoremovepowderresiduethathasbuiltuponit.Dripadropofoilontothebacksideofthefiringpintolubricatethemovementofthefiringpinandcampinintheboltcarrier.

Cleaning the Lower Receiver:Useasmallbrushorguncleaningragtoremoveresiduefrominsidethelowerreceiver.Applyasmalldropofoiltotriggerandhammerspringsforsmoothoperationofboth.Wipeoutmagazinewellwithanoilmoistenedragtoremovepowderdeposits

For more information on Breech-to-Muzzle® cleaning

with Otis Technology visit ww.otistec.com

2.RuntheBrush:Runtheappropriatesizedbrushfromthebreechtothemuzzletoloosenandremovecopperandleaddepositsorotherfouling.

3.Runadrypatch:Useaclean,drypatchandpullthroughfromthebreechtothemuzzletoremoveanyfoulingloosenedbythebrush.

4.Repeatasoftenasisnecessaryuntilclean.

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CORE Rifle Systems Warranty:TheProductyouhavejustpurchasedhasthesimplest,mostplainlywrittenwarrantyyouwilleverread.Thereisnofineprint.ThisCORERifleSystemsproducthasbeenmanufacturedandassembledwithpainstakingcareandprecisionbyproudU.S.VeteransandCraftsman,trainedbythebestthereis.Ifanythingisnotasitshouldbe,accuracyincluded,ifanythingmalfunctions,simplycontactoneofourprofessionalsandwewillworktomakeitright.Ifyou’rethe5thownerandtheriflehasseen40k+rounds,itsimply…doesn’t…matter.Westandbehindourriflesandwetakecareofourcustomers.Wewillcoveranythingotherthannormalwear&tear,abuseorneglect.

Westandbehindourproductsandwetakecareofourcustomers.Thatisourpromiseandyourassurance.”

Warranty Service and Product Registration:Totakepartinouramazingwarrantyandtoregisteryourproduct,pleasevisitCORERIFLESYSTEMS.COM.ShouldyouneedtofileaclaimPLEASEDONOTCALL,simplyvisitourwebsite,createaticketandwewillworktoresolveyourissuewithasmuchexpediencyaspossible.

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Notes:

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For more information about the CORE Rifle Systems family of products, visit your local gun dealer, or visit our website at www.coreriflesystems.com

CORE RIFLE SYSTEMS4600 W. Highway 326 • Ocala, Florida 34482

Telephone: (352) 401-9070www.coreriflesystems.com