AR Parts in 5.56x45mm NATO

8.5" 1:7 5.56 Stainless Steel M4 Pistol Barrel

11.5" 5.56 NATO 1:7 Twist 4150V Black Nitride Carbine Barrel

NBS AR-15 .223/5.56 Bolt Carrier Group - Phosphate

Juggernaut Tactical AR-15 5.56 Black Stainless Midlength Fluted Barrel 18" 1:8 Twist

Juggernaut Tactical AR-15 5.56 Stainless Midlength Fluted Barrel 18" 1:8 Twist

Juggernaut Tactical AR-15 5.56 Stainless Midlength Fluted Barrel 16" 1:8 Twist

NBS .223/5.56 C158 Bolt Carrier Group Black Nitride

Toolcraft Lightweight .223/5.56 BCG (Bolt Carrier Group) - TiN

Toolcraft Lightweight .223/5.56 BCG (Bolt Carrier Group) - Nickel Boron

NBS 7.5 5.56 Sport DRP Pistol M-LOK Upper Assembly

NBS 10.5 5.56 Gov / SOCOM Carbine M-LOK Upper Assembly

Sionics Weapon Systems M16 5.56 Bolt Carrier Group - Phosphate

Sionics Weapon Systems M16 5.56/.223 Bolt Carrier Group - NP3

NBS Sport 16 5.56 Gov / SOCOM Midlength M-LOK Upper Assembly

Centurion Arms C4 5.56 Billet AR-15 Upper Receiver

Centurion Arms CM4 5.56 Forged AR-15 Upper Receiver

Juggernaut Tactical AR-15 Muzzle Brake - 5/8x24, Black

Rubber City Armory 5.56 Bolt Rebuild Kit

Rubber City Armory AR-15 Tool Steel Cam Pin

Rubber City Armory Enhanced AR-15 Firing Pin

Rubber City Armory Lightweight AR-15 Titanium BCG w/ Adjustable Gas Key

Rubber City Armory Lightweight AR-15 Titanium BCG

Rubber City Armory Low Mass Competition AR-15 BCG w/ Adjustable Gas Key

Rubber City Armory Low Mass Competition AR-15 BCG