Cobalt Kinetics 10.8in Stripped Upper Receiver Group FDE. All CK-Pro URGs are expertly built by gunsmith staff. Built URGs are test-fired for function before leaving out the door to the customer. Specifications for Cobalt Kinetics 10.8in Stripped Upper Receiver Group: Manufacturer: Cobalt Kinetics Color: Flat Dark Earth Finish: Cerakote Package Contents: Cobalt Kinetics 10.8in Stripped Upper Receiver Group Cobalt Kinetics STRIPPD URG 10.8 FDE CK-PRO-URG-108-S-FDE