Cobalt Kinetics CK-PRO Complete Upper Receiver Group 5.56 NATO 6.75" CKG

The Cobalt Kinetics CK-PRO is a complete AR-15 upper receiver group chambered in 5.56 NATO, built around a 6.75" barrel. This upper receiver kit is designed for pistol-length builds with a pistol gas system. The CKG designation indicates Cobalt Kinetics' signature features for enhanced performance and reliability. Threaded muzzle accepts standard 1/2-28 muzzle devices.