<p>Primary Weapons 2M118UA0B MK118 223 Wylde 18″ 4140 Steel Threaded Black Bbl Finish The MK118 upper is a gas piston system at a mid- length. It features a 18 inch barrel, and has key mod rails. Caliber :223 Wylde Sights :None, Optic Ready Barrel Length :18″ Barrel Material :4140 Steel Twist :1:8″ Barrel Description :Threaded Barrel Finish :Black Receiver Description:7075-T6 Aluminum Receiver Finish :Black</p>
