Ballistic Advantage Ar-15 Modern Series Barrels .300 Blackout - Ar-15 Pistol Length 10 Barrel .300 B

Radical Firearms Complete Upper Assembly AR-15 .300 Blackout 10.5in Barrel 10in HG M-LOK RPR 5/8x24 A2 FH Black CFU10.5-300HBAR-10RPR

Radical Firearms Complete Upper Assembly AR-15 .300 Blackout 10.5in Barrel 10in HG M-LOK RPR 5/8x24 A2 FH Black CFU10.5-300HBAR-10RPR. 5in HBAR profile 300BLK is a complete MIL-STD upper ready to drop on any MIL-STD lower Receiver. Perfect for the... ... more

Ghost Firearms Elite Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Free Float Hand Guard

Ghost Firearms Elite Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Free Float Hand Guard. 300 Blackout Upper Receiver is an essential part of any build. Ghost Firearms machined these... ... more

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Moly Steel Barrel 1-8 Twist M-LOK Free Float Hand Guard Burnt Bronze

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Moly Steel Barrel 1-8 Twist M-LOK Free Float Hand Guard Burnt Bronze. Their most widely used Ghost Vital .300 blackout pistol kit includes M-LOK free-float handguard... ... more

Cmmg Ar-15/M16 300 Blk Barrels - Ar15 8.2" 300blk Mr Barrel

Direct replacement for the standard .223/5.56mm barrel converts your AR-15 to the high-performance 300 AAC Blackout (300BLK) cartridge. The 300 AAC lets you upgrade your rifle to 7.62 x 39 ballistics, while retaining the standard AR-15/M16 bolt,... ... more

Daniel Defense Ar-15/M16 300 Blk S2w Hammer Forged Barrels - 16" S2w Carbine Length 300 Blk Barrel,

These barrels are cold hammer-forged from high-grade chromium-molybdenum-vanadium alloy steel for exceptional strength and accuracy potential-like a high-end match rifle barrel. Magnetic particle inspection (MPI) ensures there are no internal flaws... ... more

Ballistic Advantage Ar-15 5.56 Barrels Hanson Profile - 5.56 Barrel Hanson 10.3" Carbine Gas System

Ballistic Advantage's Hanson Profile AR-15 barrels give you the same harmonic advantages of a heavy-profile barrel without the extra weight. Developed by Ballistic Advantage's barrel guru, Clint Hanson, this unique profile eliminates sharp shoulders... ... more

Faxon Firearms Ar-15 Barrels 300 Blackout Gunner Profile - 300 Aac Blackout 1-8 Twist 7.5" Barrel

Faxon's .300 AAC Blackout Gunner Barrels are machined from hardened 4150 Chrome moly in a unique contour that balances rigidity - for excellent accuracy - with light weight for maneuverability. From the muzzle back to the gas block .300 AAC Blackout... ... more

Faxon Firearms Ar-15 Barrels 300 Blackout Gunner Profile - 300 Aac Blackout 1-8 Twist 16" Barrel

Faxon's .300 AAC Blackout Gunner Barrels are machined from hardened 4150 Chrome moly in a unique contour that balances rigidity - for excellent accuracy - with light weight for maneuverability. From the muzzle back to the gas block .300 AAC Blackout... ... more

Faxon Firearms Ar-15 Barrels 300 Blackout Gunner Profile - 300 Aac Blackout 1-8 Twist 10.5" Barrel

Faxon's .300 AAC Blackout Gunner Barrels are machined from hardened 4150 Chrome moly in a unique contour that balances rigidity - for excellent accuracy - with light weight for maneuverability. From the muzzle back to the gas block .300 AAC Blackout... ... more

Wilson Combat Ar-15 Recon Barrel 300 Blackout - Recon Barrel 300blk 16 Fluted Pistol Gas Stainless

If you're building a suppressor-ready carbine chambered in the popular .300 Blackout, then the Wilson Combat AR-15 Recon Barrel is purpose-built for your project, thanks to a unique setup with a number of special features. The Wilson Combat AR-15... ... more

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol 4150 Light HBAR Barrel 1-8 Twist 11in M-LOK Free Float Hand Guard

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol 4150 Light HBAR Barrel 1-8 Twist 11in M-LOK Free Float Hand Guard. Their most widely used Ghost Vital .300 blackout pistol kit includes M-LOK free-float handguard... ... more

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these... ... more

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Tactical

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Tactical. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these... ... more

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Light HBAR Barrel 1-8 Twist 11in M-LOK Free Float Hand Guard Flash

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Light HBAR Barrel 1-8 Twist 11in M-LOK Free Float Hand Guard Flash. Their most widely used Ghost Vital .300 blackout pistol kit includes M-LOK free-float handguard... ... more

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol 4150 Light HBAR Barrel 1-8 Twist 11in M-LOK Free Float Hand Guard

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol 4150 Light HBAR Barrel 1-8 Twist 11in M-LOK Free Float Hand Guard. Their most widely used Ghost Vital .300 blackout pistol kit includes M-LOK free-float handguard... ... more

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Light HBAR Barrel 1-8 Twist 11in M-LOK Free Float Hand Guard Flash

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Light HBAR Barrel 1-8 Twist 11in M-LOK Free Float Hand Guard Flash. Their most widely used Ghost Vital .300 blackout pistol kit includes M-LOK free-float handguard... ... more

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these... ... more

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these... ... more

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Blue

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Blue. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Steel Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard A2 Flash Hider

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Steel Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard A2 Flash Hider. Their most widely used Ghost Vital .300 blackout pistol kit includes M-LOK free-float handguard... ... more

Ghost Firearms Vital Complete Upper Receiver .300 Blackout 7.5in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 7in M-LOK Free Float Hand Guard A2

Ghost Firearms Vital Complete Upper Receiver .300 Blackout 7.5in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 7in M-LOK Free Float Hand Guard A2. 300 Blackout Upper Receiver. The ideal addition to your firearm these AR15 Lower Parts by Ghost... ... more

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these... ... more

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 7.5in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9in Octagon M-LOK Hand Guard Dimpled Flash Can

Grid Defense Complete Upper Receiver .300 Blackout 7.5in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9in Octagon M-LOK Hand Guard Dimpled Flash Can. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these... ... more

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Ghost Firearms Vital Complete Upper Receiver .300 Blackout 10.5in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard A2

Ghost Firearms Vital Complete Upper Receiver .300 Blackout 10.5in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard A2. 300 Blackout Upper Receiver. The ideal addition to your firearm these AR15 Lower Parts by Ghost... ... more

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol 4150 Moly Steel Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard A2

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol 4150 Moly Steel Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard A2. Their most widely used Ghost Vital .300 blackout pistol kit includes M-LOK free-float handguard... ... more

Ghost Firearms Vital Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Light HBAR Barrel 1-8 Twist 9in M-LOK Freefloat Handguard Blk

Ghost Firearms Vital Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Light HBAR Barrel 1-8 Twist 9in M-LOK Freefloat Handguard Blk. 300 Blackout Complete Upper Receiver w/Pistol Lower Parts Kit is full of them. Ghost Firearms... ... more

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Light HBAR Barrel 1-8 Twist 11in M-LOK Freefloat Handguard Flash Can

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Light HBAR Barrel 1-8 Twist 11in M-LOK Freefloat Handguard Flash Can. Their most widely used Ghost Vital .300 blackout pistol kit includes M-LOK free-float handguard... ... more

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Moly Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard A2 Flash Hider

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Moly Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard A2 Flash Hider. Their most widely used Ghost Vital .300 blackout pistol kit includes M-LOK free-float handguard... ... more

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Flat Dark

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Flat Dark. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these... ... more

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Light HBAR Barrel 1-8 Twist 11in M-LOK Freefloat Handguard Flash Can

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Light HBAR Barrel 1-8 Twist 11in M-LOK Freefloat Handguard Flash Can. Their most widely used Ghost Vital .300 blackout pistol kit includes M-LOK free-float handguard... ... more

Ghost Firearms Vital Complete Upper Receiver .300 Blackout 16in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 11in M-LOK Free Float Hand Guard A2

Ghost Firearms Vital Complete Upper Receiver .300 Blackout 16in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 11in M-LOK Free Float Hand Guard A2. 300 Blackout Upper Receiver. The ideal addition to your firearm these AR15 Lower Parts by Ghost... ... more

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Moly Steel Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard A2 Flash

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Moly Steel Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard A2 Flash. Their most widely used Ghost Vital .300 blackout pistol kit includes M-LOK free-float handguard... ... more