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With a 16 inch nitride barrel chambered in 300 blackout, this AR15 upper receiver assembly is readily attachable to any Mil-Spec lower receiver. The upper receiver is forged in the M4 flat top design, facilitating easy attachment of rifle scopes and red dot sights to the picatinny rail. A Moriarti t..

AR-15 .350 Legend  20" Stainless Steel Tactical Upper Assembly / Mlok - If you're seeking unrivaled performance, look no further than Moriarti Armaments' 350 Legend Upper. This high-quality firearm accessory is the key to unlocking a powerful and precise shooting experience, thanks to i..

AR-15 .350 Legend 16" M4 MLOK Upper Assembly | Side Charging ReceiverBarrel - 16" packerized 4150 CMV. M4 profile. Chambered in 350 legend. 1-16 rh twist. .750 diameter under gas block. M4 feedramps. 5/8x24 thread. Barrel is finished off with flash hider. A3  flat top upper receive..

AR-15 .450 Bushmaster 10.5" "Thumper" Pistol Upper Assembly -  upgrade your AR. Just add this .450 Pistol Flattop Upper to your AR15 Pistol Lower Receiver, and you are ready for the range. This assembly includes 10" heavy profile .450 Bushmaster barrel with slim 10" free-float handguard, a..

AR-15 .450 Bushmaster 16" Stainless Upper Assembly / Afterburner / MlokThis drop-in .450 Bushmaster upper will attach to virtually any milspec AR-15 lower. Make sure to enhance your lower with 4.3 heavy buffer for maximum performance of this big cal firearm. Barrel - 16" 416R stainless ..

AR-15 .450 Bushmaster 7.5" Pistol Upper Assembly / Mlok Free Float - Just add this .450 Pistol Flattop Upper to your AR15 Pistol Lower Receiver, and you are ready for the range. This assembly includes 7" heavy profile .450 Bushmaster barrel with slim 7" free-float handguard, available in y..

AR-15 .458 Socom 13" Upper Build W/ 12" Slim Rail / 3" Fake CanFeatures:Barrel Length: 13" .458 Melonite Barrel Gas System: Carbine Barrel Profile: Heavy Barrel Steel: 41V50 Barrel Finish: Nitride coated Muzzle Thread: 5/8x24 Twist Rate: 1/14 Barrel Extension: Socom Extension Diameter a..

AR-15 .458 SOCOM Flat Top Upper Receiver, Stripped 7075 T6 Aluminum Frogings Black anodized finish M-4 feed ramps Ejection port machined extra wide for the .458 Socom and other large bore calibers Made in the USA by Anderson ManufacturingCompatible with Mil Spec AR-15 lowers ..

AR-15 .50 Beowulf 12.5" Upper Build W/ 12" Slim Rail and Custom Brake. Uppers use 6.5 Grendel Type 2 BCG.Features:Barrel Length: 12.5" 12.7x42 Cal, Custom Made Gas System: Carbine Barrel Profile: Heavy Barrel Steel: 416CMV Barrel Finish: Parkerized Muzzle Thread: 5/8x24 Twist Rate: 1/20 ..

AR-15 .50 Beowulf 16" Upper Build W/ 15" Slim Rail and Custom Brake. Upper does not come with BCG and CH, can be purchased separately.Features:Barrel Length: 16" 12.7x42 Cal Gas System: Carbine Barrel Profile: Heavy Barrel Steel: 416CMV Barrel Finish: Parkerized Muzzle Thread: 49/64 x 20 ..

AR-15 10MM 10.5" AUTO BARREL 4150 STEEL / NITRIDECartridge: 10 mm AutoFinish: BlackLength: 10.5"Muzzle Threads: 5/8-24Twist: 1-16Made in the USA BY BROWNELLSThe Brownells 10mm Auto AR-15 barrel allows fans of the powerhouse 10mm cartridge to built an AR-style carbine or pist..

AR-15 16" 300AAC BLK  BARRETT STYLE 15" LIGHTWEIGHT FDE UPPER. WE NOW MAKE THIS ITEM WITH MLOK RAIL.  Barrel Length: 16"Gas System: PistolBarrel Steel: 4150V Chrome Moly VanadiumBarrel Finish: NitrideMuzzle Thread: 5/8-24Chamber: 300 BlackoutTwist Rate: 1 in 7"Barrel Extension: M4Diamet..

AR-15 16" 7.62x39 15" LIGHTWEIGHT BLUE UPPER W/TRIPORT MUZZLE BRAKE. AR-47 are compatible with your standard mil-spec AR-15 lower receivers.  Barrel Length: 16"Gas System: CarbineBarrel Steel: 4150V Chrome Moly VanadiumBarrel Finish: PhosphateMuzzle Thread: 5/8-24Chamber: 7.62x39Twist Rate: ..

Moriarti Armament's AR-15/M-16 16″ 6.5 Grendel Type II FULLY ASSEMBLED Upper Assembly includes:AR15 / M16 Enhanced Upper Receiver 16″ Contour Parkerized 6.5 Grendel (Type II) 4150 Chrome Moly Steel Barrel with 1:8 Twist and Carbine Gas.750 Low Profile Gas BlockCarbine L..

The Moriarti Armaments AR-15 21″ 6MM ARC Match Grade Stainless Nitride Upper Assembly / Nitride Finish / Rocket Man comes complete with a MATCH GRADE Stainless Steel 416R Barrel with Nitride QPQ finish from Odin Works, low profile Steel .875  steel gas block and a Stainless Steel..

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" med profil..

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" med profile 4150 CMV, ni..

AR-15 300 AAC 16" BLACKOUT STAINLESS STEEL DIAMOND FLUTED UPPER ASSEMBLY, 300 blackout caliber uppers use your standard .223/5.56 bolt carrier group and magazines. No special bolts or magazines needed to get into a new caliber! This upper is custom flute to order - please allow 3-4 weeks on ETA.Barr..

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 BLK 14.5'' PISTOL UPPER ASSEMBLY / 7" FAKE SUPPRESSOR / MLOK 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 - 14.5" 41V50 CMV STEEL&nbs..