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  • AR-15 300 AAC 14.5" Blackout keymod tactical pistol kit
    AR-15 300 AAC 14.5" Blackout keymod tactical pistol kit. This kit contains all components to complete your AR-15 300 BLK build. The kit comes WITHOUT 80% lower receiver. All options and modifications to your kit are available on top of this page.  All components are Mil Spec and made in the USA..
    AR-15 300 AAC 14.5" Blackout keymod tactical pistol kit. This kit c...
    $549.95
  • AR-15 300 AAC Blackout 16" Carbine "BLACK CANON" UPPER ASSEMBLY
    AR-15 300 AAC Blackout 16" Carbine "BLACK CANON" UPPER ASSEMBLY . CA and NY compliant.Action: Semi-autoGas System: Pistol Length Gas SystemChamber: 300 BlackoutTwist Rate: 1/8 button rifledBarrel: 16" heavy barrel, 4150V steel, chrome moly, heat treated, black, M4 ..
    AR-15 300 AAC Blackout 16" Carbine "BLACK CANON" UPPER ASSEMBLY&nbs...
    $269.95$399.95
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  • AR-15 300 AAC Blackout 16" Carbine "CLAW" UPPER ASSEMBLY / MLOK
    AR-15 300 AAC Blackout 16" Carbine "CLAW" UPPER ASSEMBLY / MLOK . CA and NY compliant.Action: Semi-autoGas System: Carbine Length Gas SystemChamber: 300 BlackoutTwist Rate: 1/8 button rifledBarrel: 16" heavy barrel, 4150V steel, chrome moly, heat treated, black, M4..
    AR-15 300 AAC Blackout 16" Carbine "CLAW" UPPER ASSEMBLY / MLOK&nbs...
    $269.95$399.95
  • AR-15 300 AAC BLK 7.5" Cookie Cutter Upper Assembly / Quadrail
    AR-15 300 AAC BLK 7.5" Cookie Cutter Upper Assembly / QuadrailAction: Semi-auto Gas System: Pistol Length Gas System Chamber: 300 AAC Twist Rate: 1/8  Muzzle Device: Strikes Industries Cookie Cutter compensator  (reduces recoil on short barreled rifles and p..
    AR-15 300 AAC BLK 7.5" Cookie Cutter Upper Assembly / QuadrailActio...
    $299.95$399.95
  • AR-15 300 AAC BLK 7.5" MLOK UPPER ASSEMBLY WITH FLASH CONE
    AR-15 300 AAC BLK 7.5" MLOK UPPER ASSEMBLY WITH FLASH CONEAction: Semi-auto Gas System: Pistol Length Gas System Chamber: 300 AAC Twist Rate: 1/8  Muzzle Device: Flash Cone Can    Barrel: 7.5" 300 AAC M4 hbar contour, phosphate finish, heat trea..
    AR-15 300 AAC BLK 7.5" MLOK UPPER ASSEMBLY WITH FLASH CONEAction:&n...
    $289.95$349.95
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  • AR-15 16" 300 AAC BLACKOUT BARRETT STYLE 15" LIGHTWEIGHT MLOK UPPER
    AR-15 16" 300 AAC BLACKOUT PISTOL LENGTH 1/8 NITRIDE 15" LIGHTWEIGHT KEYMOD UPPER. 300 blackout caliber uppers use your standard .223/5.56 bolt carrier group and magazines. No special bolts or magazines to buy to get into a new caliber! Just drop an upper on your standard mil-spec AR-15 lower, and y..
    AR-15 16" 300 AAC BLACKOUT PISTOL LENGTH 1/8 NITRIDE 15" LIGHTWEIGH...
    $279.95$369.95
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  • AR-15 16" 300 AAC BLACKOUT STAINLESS UPPER WITH THREAD PROTECTOR
    AR-15 16" 300 AAC BLACKOUT STAINLESS UPPER WITH THREAD PROTECTOR. New by Moriarti Armaments, CA and NY compliant. 300 blackout caliber uppers use your standard .223/5.56 bolt carrier group and magazines. No special bolts or magazines to buy to get into a new caliber! Just drop an upper on your stand..
    AR-15 16" 300 AAC BLACKOUT STAINLESS UPPER WITH THREAD PROTECTOR. N...
    $349.95
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  • AR-15 300 AAC  7.5" pistol kit - MLOK / SBA3 / SHORTIE
    AR-15 300 AAC  7.5" pistol kit - MLOK / SBA3 / SHORTIE This AR Pistol kit includes EVERYTHING you need to build the Shorty except for a stripped 80% lower receiver. The foundation of this pistol kit is a MIL-SPEC type III upper receiver with a hard coat anodized finish and machined from 70..
    AR-15 300 AAC  7.5" pistol kit - MLOK / SBA3 / SHORTIE Th...
    $499.95$649.95
  • AR-15 300 AAC 7.5" stainless steel blackout pistol barrel 1-7 twist
    AR-15 300 AAC 7.5" stainless steel blackout pistol barrel 1-7 twist. Made from 416 stainless steel hardened to 26-32 rc and stress relieved. 1-9 rh twist. 6 groove button rifled. Chambered in 5.56 nato (also accepts .223 rounds). .750"diameter under gas block. Standard 1/2-28 thread for..
    AR-15 300 AAC 7.5" stainless steel blackout pistol barrel 1-7 twist...
    $149.95
  • AR-15 300 AAC blackout 10.5"  pistol upper assembly with flash cone
    AR-15 300 AAC blackout 10.5"  pistol upper assembly with flash coneBARREL - 10.5" 4150V PARKERIZED HBAR/HEAVY CONTOUR BARREL. HARDENED TO 26-32 RC AND STRESS RELEIVED.  CHAMBERED IN 300 BLACKOUT. 1/7 RH TWIST.* PISTOL GAS SYSTEM .750 UNDER GAS BLOCK. BARREL IS FINISHED OFF WITH A..
    AR-15 300 AAC blackout 10.5"  pistol upper assembly with flash...
    $249.95$399.95
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  • AR-15 300 AAC blackout 10.5" nitride classic mlok upper assembly
    AR-15 300 AAC blackout 10.5" classic mlok upper assembly is a perfect addition to your AR pistol. No other modifications to your AR-15 is required. Uses standard AR-15 BCG. All you need is 300 BLK ammo and this upper - and you have a new AR. The 10.5" 300 BLK upper includes:Barrel - 10.5" heavy cont..
    AR-15 300 AAC blackout 10.5" classic mlok upper assembly is a perfe...
    $229.95$399.95
  • AR-15 300 AAC blackout 16" pistol length upper assembly w/ 15" Mlok
    AR-15 300 AAC blackout 16" pistol length upper assembly w/ 15" Mlok is a perfect addition to your AR pistol. No other modifications to your AR-15 is required. Uses standard AR-15 BCG. All you need is 300 BLK ammo and this upper - and you have a new AR. Barrel - 16" heavy contour barrel 415..
    AR-15 300 AAC blackout 16" pistol length upper assembly w/ 15" Mlok...
    $269.95$349.95
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  • AR-15 300 AAC blackout 16" stainless Black Wolf upper assembly / Mlok
    AR-15 300 AAC blackout 16" stainless steel "Black Wolf" complete upper assembly. 300 blackout caliber uppers use your standard .223/5.56 bolt carrier group and magazines. No special bolts or magazines to buy to get into a new caliber.  Barrel - 16" 416 stainless steel hbar contour barrel...
    AR-15 300 AAC blackout 16" stainless steel "Black Wolf" complete up...
    $299.95$429.95
  • AR-15 300 AAC blackout 16" stainless steel black diamond fluted upper assembly
    AR-15 300 AAC blackout 16" stainless steel black diamond fluted upper assembly. 300 blackout caliber uppers use your standard .223/5.56 bolt carrier group and magazines! No special bolts or magazines to buy to get into a new caliber.    Barrel - 16" 416 stainless steel hbar contou..
    AR-15 300 AAC blackout 16" stainless steel black diamond fluted upp...
    $399.95$499.95
  • AR-15 300 AAC blackout 16" stainless straight fluted tactical upper assembly
    AR-15 300 AAC blackout 16" stainless steel straight fluted tactical upper assembly. 300 blackout caliber uppers use your standard .223/5.56 bolt carrier group and magazines. No special bolts or magazines to buy to get into a new caliber! Just drop an upper on your standard mil-spec AR-15 lower, and ..
    AR-15 300 AAC blackout 16" stainless steel straight fluted tactical...
    $299.99$399.95
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  • AR-15 300 AAC blackout 7.5" nitride upper assembly w/ Mlok handguard
    AR-15 300 AAC blackout 7.5" nitride upper assembly w/ Mlok handguard is a perfect addition to your AR pistol. No other modifications to your AR-15 is required. Uses standard AR-15 BCG. All you need is 300 BLK ammo and this upper - and you have a new AR. Barrel - 7.5" heavy contour barrel 4..
    AR-15 300 AAC blackout 7.5" nitride upper assembly w/ Mlok handguar...
    $219.95$399.95
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  • AR-15 300 AAC Blackout 7.5" Pistol Build Kit / M-Lok / Shockwave
    AR-15 300 AAC Blackout 7.5" Pistol Build Kit w/ 4.5" M-Lok & Shockwave. This kit contains all components to complete your AR-15 project except 80% stripped lower receiver. All options and modifications to your kit are available on top of this page. All components are Mil Spec and made ..
    AR-15 300 AAC Blackout 7.5" Pistol Build Kit w/ 4.5" M-Lok & Sh...
    $499.95$649.95
  • AR-15 300 AAC Blackout 7.5" quad tactical pistol kit
    AR-15 300 AAC Blackout 7.5" tactical pistol kit. This kit contains all components to complete your AR-15 project. The kit comes WITHOUT 80% stripped lower receiver. All options and modifications to your kit are available on top of this page. All components are Mil Spec and made in the USA. ..
    AR-15 300 AAC Blackout 7.5" tactical pistol kit. This kit contains ...
    $399.95$499.95
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  • AR-15 300 AAC Blackout 7.5" tactical pistol kit w/ super slim rail
    AR-15 300 AAC Blackout 7.5" tactical pistol kit w/ super slim rail. This kit contains all components to complete your AR-15 project. The kit comes WITHOUT 80% stripped lower receiver. All options and modifications to your kit are available on top of this page. All components are Mil Spec and ma..
    AR-15 300 AAC Blackout 7.5" tactical pistol kit w/ super slim rail....
    $449.95$529.95
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  • AR-15 300 AAC Blackout MA-300 16" CENTURION SEMI-AUTO RIFLE / BLUE-RED
    AR-15 300 AAC Blackout MA-300 16" CENTURION SEMI-AUTO RIFLE / BLUE-REDFeatures:Barrel: 16” 300 Blackout with Phosphate FinishTwist Rate: 1 in 8”Feed Ramps: M4BCG: M16 Case Hardened 8620 Steel Nitride Coated , M4/AR-15 Compatible, Mil-Spec/MP Tested, NitrideGas Block: Steel .750 Low ProfileGas Tube: ..
    AR-15 300 AAC Blackout MA-300 16" CENTURION SEMI-AUTO RIFLE / BLUE-...
    $599.95$849.99
  • AR-15 300 AAC Blackout MA-300 16" SEMI-AUTO RIFLE W/MAG
    AR-15 300AAC Blackout MA-300 16" SEMI-AUTO RIFLE W/MAG. FFL transfer item. All NFA rules apply. Comes with standard AR-15 mag (30rd or 10rd, depending on the state).Features:Barrel: 16” 300 Blackout with Phosphate FinishTwist Rate: 1 in 8”Feed Ramps: M4BCG: M16 Case Hardened 8620 Steel Nitride Coate..
    AR-15 300AAC Blackout MA-300 16" SEMI-AUTO RIFLE W/MAG. FFL transfe...
    $549.95$799.99
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  • AR-15 300 AAC BLK 13.5'' PISTOL UPPER ASSEMBLY W/ 5.5" FAKE SUPPRESSOR
    AR-15 300 AAC BLK 13.5'' PISTOL UPPER ASSEMBLY W/ 5.5" FAKE SUPPRESSOR is a perfect addition to your pistol look. Just drop this pistol upper assembly on your Mil-Spec lower receiver and enjoy the outdoors. Created by MA especially for you, all USA made. BARREL - 13.5" 41V50 CMV STEEL&nb..
    AR-15 300 AAC BLK 13.5'' PISTOL UPPER ASSEMBLY W/ 5.5" FAKE SUPPRES...
    $299.95$399.95
  • AR-15 300 Blackout AAC 16" Magpul Moe Defender Rifle Kit - BLACK
    AR-15 300 Blackout AAC 16" Magpul Moe Defender Rifle Kit - Various Colors. This kit contains all components to complete your AR-15 build. The kit comes WITHOUT 80% lower receiver. All options and modifications to your kit are available on top of this page. Upper and 80% Stripped Lower are ..
    AR-15 300 Blackout AAC 16" Magpul Moe Defender Rifle Kit - Var...
    $499.95$599.95
  • AR-15 9" .300 AAC BLACKOUT UPPER RECEIVER W/ 9" LIGHTWEIGHT MLOK
    AR-15 9" .300 AAC BLACKOUT UPPER RECEIVER W/ 9" LIGHTWEIGHT MLOK Barrel Length: 9" Barrel Profile: Heavy Barrel Steel: 4150 Chrome Moly Vanadium  Barrel Finish: Nitride Barrel Extension: M4 Muzzle Thread: 5/8X24 Chamber: 300 AAC Twist Rate: 1 in 8"Gas System: Pistol LengthGas Bloc..
    AR-15 9" .300 AAC BLACKOUT UPPER RECEIVER W/ 9" LIGHTWEIGHT MLOK ...
    $299.95$399.95
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Everything You Need To Know about 300 Blackout Posted by on Apr 20, 2016.

We all love our AR15 platform. The most versatile and reliable ever. And with the new developments in the industry, we are constantly adding new calibers t.. more..