Lead & Steel ARC 5.56mm 16in Upper Reciever Group Mid Length 1-8 Twist Earth 110523. 56mm 16in Upper Reciever Group: Manufacturer: Lead & Steel Cartridge: 5.56mm Gas System Length: Mid Length Barrel Twist Rate: 1-8 Finish: Hard Coat Anodized...
Lead & Steel ARC 5.56mm 16in Upper Reciever Group Mid Length 1-8 Twist Earth 110523. 56mm 16in Upper Reciever Group: Manufacturer: Lead & Steel Cartridge: 5.56mm Gas System Length: Mid Length Barrel Twist Rate: 1-8 Finish: Hard Coat Anodized...