Cobalt Kinetics CK-Pro 5.56x45mm NATO 13.7in Complete Upper Receiver Black Cerakote CKPROURG556137BLK. All CK-Pro URGs are expertly built by our gunsmith staff. Built URGs are test-fired for function before leaving out the door to the customer....
Cobalt Kinetics CK-Pro 5.56x45mm NATO 13.7in Complete Upper Receiver Black Cerakote CKPROURG556137BLK. All CK-Pro URGs are expertly built by our gunsmith staff. Built URGs are test-fired for function before leaving out the door to the customer....