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AAC 100884 300BO 9
This complete Upper is only legal if it is put on a Class III firearm or used as a pistol upper. This barrel assembly is all you need to convert your 5.56mm AR to 300 AAC BlackOut. The 4150 steel barrel features a black nitride finish (including the bore and chamber), 1:8" twist for super- or sub-so..
Availability:Out Of Stock
AAC 101716 300BO AR Upper 16
The Advanced Armament Corp. developed this 300 Blackout complete upper system to launch 30 caliber projectiles from the AR platform without a reduction in magazine capacity and retain compatibility with the standard bolt.Type:  Complete Gas ImpingementCaliber:  300 AAC Blackout/Whisper (7.62x35mm)Si..
Availability:Out Of Stock
Adams Arms FGAA01235 P1 223 Remington/5.56 NATO 16
Adams Arms'' P1 is the introductory model to the P-Series. This model features an ergonomic, mid-length Magpul MOE handguard and the standard adjustable Picatinny railed piston system. The P1 is perfect for any and all AR enthusiasts looking for a self-cleaning, piston driven upper that provides sup..
Adcor Defense 2014000E B.E.A.R. Elite AR-15 Piston Upper Assy. With sights
Adcor uppers attach to any mil-spec lower, making it easy to upgrade your existing gas-impingement AR to a free-floating piston system. These complete uppers attach easily to the lower receiver, and one upper features folding Magpul front and rear sights. It is manufactured in the USA.Type:  Complet..
Availability:Out Of Stock
Adv Armament 102129 Blackout 300AAC 12.5
The Advanced Armament 300 AAC Blackout 12.5" Upper is a a complete receiver assembly. It is a 12.5" Nitrided 1:7" twist barrel that is also threaded at 5/8-24. It has an AAC 51T Blackout Flash Hider, "Full Auto" BCG, and KAC URX Rail. It is ready to drop onto your AR15/M16/M4 lower with Mil-Spec pus..
Advanced Armament 102780 5.56 NATO 223 Rem/5.56 NATO 16
The complete 5.56NATO upper receiver assembly from Advanced Armament features a 16" Nitrided 1:7 Twist Barrel that is threaded 5/8-24. It has a AAC 51T BLACKOUT Flash Hider and "Full Auto" BCG. It has a Mid-Length Gas System and KAC URX Rail. IT is ready to drop onto your AR15/M16/M4 lower. It works..
Availability:Out Of Stock
Availability:Out Of Stock
ATI GOMX556S Omni Maxx 5.56x45 16
Omni Hybrid Maxx features a fully-patented metal reinforced polymer upper receiver along with a fully-patented metal reinforced polymer lower receiver. The Omni Hybrid lower features a patented hammer and trigger pin retainment system, preventing movement from the hammer and trigger pin during firi..
Availability:Out Of Stock
Bushmaster 91702 Flattop Complete Upper Receiver Assembly 450 Bushmaster 20
Bushmaster''s complete upper allows you to add the hard-hitting punch of the 450 Bushmaster to your Bushmaster lower receiver instantly. The AR-type gas operating system drastically reduces recoil for excellent second shot control. This flattop upper includes a 20" heavy barrel with a hard-chrome li..
Availability:Out Of Stock
Bushmaster 91820 A3 AR-15 Complete Upper 7.62x39mm 16
This is a complete upper with 16" chrome lined M4 profile barrel.Type:  Complete Gas ImpingementCaliber:  7.62x39mmSights:  AR-15Barrel Length:  16.0"Barrel Material:  SteelBarrel Description:  M4 ProfileBarrel Finish:  BlackReceiver Description:  A3Receiver Finish:  BlackHandguards:  SyntheticHandg..
Availability:Out Of Stock
Bushmaster 91822 A3 AR-15 Complete Upper 223 /5.56 16
This popular complete upper features a light weight, chrome lined 16" barrel in a M4 "cutout" profile, designed to mount the M203 Grenade Launcher.Type:  Complete Gas ImpingementCaliber:  223 Remington/5.56 NATOSights:  A2 FrontBarrel Length:  16"Barrel Material:  SteelBarrel Description:  M4 Profil..
Bushmaster 92194 A3 AR-15 Complete Upper ORC Flattop 223 Rem/5.56 NATO 16
The Optics Ready Carbine upper has a 16" 4150 chrome-moly-vanadium barrel with an M4 profile and hard chrome lining in bore and chamber for extended barrel life. The forged 7075 T6 aluminum flattop receiver is lightweight and has a hard anodized black finish. This model has a milled low-profile gas ..
Bushmaster 92316 Dissipator A3 AR-15 Complete Upper 223 Rem/5.56 16
This is a complete upper. In the unique Dissipator, gas block placement is at the rifle length position and uses rifle length handguards on a carbine length barrel. Model offers reliable cycling, the accuaracy of the full sight radius, and cool operation. This upper comes complete with a carry handl..
Availability:Out Of Stock
Bushmaster 92336 A3 AR-15 Complete Upper 223 Rem/5.56 NATO 16
This highly accessorized Upper Receiver/Barrel Assembly features a fluted, 16" chrome-lined chrome moly steel barrel with a milled gas block. The flattop upper receiver and modular four-rail forend with rail covers provide all the Picatinny rails necessary for mounting optics and accessories. The ..
Availability:Out Of Stock
Bushmaster 92450 A3 AR-15 Complete Upper Predator 223 Rem/5.56 NATO 20
Adapted from the very accurate and successful 24" Varminter, the Predator Complete Upper Receiver/Barrel Assembly''s 20" Fluted Extra Heavy Barrel is button rifled 1 x 8" to stabilize the heavier 69-77 grain bullets that a predator hunter/caller would choose for bigger varmints and predators. This s..
Bushmaster 92546 A2 Post Ban AR-15 Complete Upper 223 Rem/5.56 20
This complete upper Bushmaster model offers features that make it legal for sale in states where restrictions similar to the Assault Weapons Ban of 1994 are still in place. The Bayonet Lug is milled off on this Post-Ban model.Type:  Complete Gas ImpingementCaliber:  223 Remington/5.56 NATOSights:  ..
Availability:Out Of Stock
Bushmaster 92820 A3 AR-15 Complete Upper Varminter 223 Rem/5.56 NATO 24
This complete upper assembly features a 24" Fluted Extra Heavy Barrel in 5.56mm/.223 Rem. caliber with 11 degree competition crown; heavyweight 1" diameter under the handguard; custom match hybrid chamber with a tighter SAAMI Spec headspace from the shoulder of the chamber to the bolt face, and long..
Chia 500093 M4 22LR Upper Carb 28rd 18.5
The Gen-II Pro Series carbine upper is an evolution of the M4 model, adding a 7.8" free float aluminium forend with 8 position Picatinny rail. All other characteristics remain unvaried: 18.5" heavy match, parkerized barrel, steel bolt, MIL-SPEC components. Fully functional with select fire lowers.Ty..
Availability:Out Of Stock
Chia 500095 M4 22LR Upper 28rd 18.5
The Gen-II Pro Series Rifle upper is an evolution of the M4 model, adding an 11.8" free float aluminium forend with 8 position Picatinny rail. All other characteristics remain unvaried: 18.5" heavy match, parkerized barrel, steel bolt, Mil-Spec components. Fully functional with select fire lowersTyp..
Availability:Out Of Stock
Chiappa MKS 500057 MFour Complete AR-15 Upper 22 Long Rifle 16
This is an M4 22 LR rimfire Upper Conversion Kit, Mil-Spec size for the use with AR-15/M16 firearms. The kit features complete upper with a barrel designed specifically for 22LR ammo. It includes all necessary parts for converting your existing caliber to the inexpensive 22LR rimfire. The conversion..
Availability:Out Of Stock
CMMG 10218 223/5.56 AR-15 Carbine Complete Upper 16
CMMG Upper Complete that is built off of the standard forged A3 receiver with M4 feed ramps. The barrel has a 5.56/223 chamber and bore.Type:  Complete Gas ImpingementCaliber:  223 Remington/5.56 NATOSights:  A2 FrontBarrel Length:  16"Barrel Material:  WASP Treated 4140 Chrome-Moly SteelTwist:  1:9..
CMMG 10233 9mm AR-15 Carbine Complete Upper 16
9mm M4 CMMG Complete Upper. Featuring Mil-Spec A3 Receiver, 4140 WASP Barrel with 1:10 twist. The 9mm ramped bolt uses a standard AR-15 or M16 hammer. Do not use with the dedicated 9mm hammer. It also features "F" marked front sight.Type:  Complete Gas ImpingementCaliber:  9mm LugerSights:  A2 Front..
CMMG 11083 300 AAC Blackout AR-15 Carbine Complete Upper 16
This is a complete upper 300 AAC Blackout. Featuring a carbine length handguard, "F" marked front sight base, carbine length gas system, flat-top A3 receiver,16" barrel with a 1:8 twist and has a 5/8x24 threaded A2 style flash hider.Type:  Complete Gas ImpingementCaliber:  300 AAC Blackout/Whisper (..
CMMG 30B8188 Upper Group 300 AAC Blackout/Whisper (7.62x35mm) 8
Type:  Complete Gas ImpingementCaliber:  300 AAC Blackout/Whisper (7.62x35mm)Sights:  None, Optic ReadyBarrel Length:  8"Barrel Material:  4140 Chrome Moly SteelTwist:  1:7"Barrel Description:  Medium TaperBarrel Finish:  BlackReceiver Description:  7075-T6 Aluminum M4Receiver Finish:  BlackHandguar..
Availability:Out Of Stock
CMMG 30BF827 Upper 300 AAC Blackout Carb 16
This upper has a 300AAC Black Out Chamber and the barrel is 16" M300 profile WASP treated 4140 chrome moly steel. It has a 1:7" twist and 5/8-24 threaded end. The hand guard is RKM9 handguard with a 1913 Picatinny top rail and a free floating tube. It also features a low profile gas block and no sig..
Availability:Out Of Stock
CMMG 38BCC38 Upper Group 308 Winchester/7.62 NATO 18
Type:  Complete Gas ImpingementCaliber:  308 Winchester/7.62 NATOSights:  None, Optic ReadyBarrel Length:  18"Barrel Material:  416 Stainless SteelTwist:  1:10"Barrel Description:  ThreadedBarrel Finish:  Stainless SteelReceiver Description:  6061-T6 AluminumReceiver Finish:  BlackHandguards:  Free-..
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