The Combat Armory Complete Upper is an AR-15 pattern upper chambered in 5.56mm, and it comes with the BCG installed so the heart of the action is already in the upper. Its 16" barrel is 4140 ChroMoly with a medium profile and a Melonite finish, and the 1:7 twist is built to stabilize heavier bullets. A carbine-length gas system with a .750 low-profile gas block feeds the action, and an M4 feed ramp barrel extension sits behind the chamber. The muzzle carries an A2 Flash device on 1/2x28 threads, so you can swap in a different muzzle device later.

The receiver is billet 7075 T6 in an M4 Mil-Std style with Type III anodizing, and it includes a forward assist and a dust cover. The 15" free-float handguard uses an M-Lok thin rail design with a full Pic rail, so you have mounting space for accessories along its length. Because the handguard is free float, it does not clamp onto the barrel. Everything is finished in black.

• Brand: Combat Armory
• Caliber: 5.56mm
• Barrel Length: 16" 4140 ChroMoly, 1:7 twist, Melonite finish
• Gas System: Carbine-length with .750 low-profile gas block
• Handguard: 15" free-float M-Lok thin rail, full Pic rail
• Upper Receiver: Billet 7075 T6, M4 Mil-Std style, Type III anodizing
• Included: BCG installed
• Finish: Black