Bear Creek Arsenal BC-15 12.7x42 18in Bolt Action Style Upper Receiver Heavy 1-20 49/64x20 Flash Hider Parkerized

Bear Creek Arsenal BC-15 12.7x42 18in Bolt Action Style Upper Receiver Heavy 1-20 49/64x20 Flash Hider Parkerized. 7x42 upper is compatible with any mil-spec AR-15 lower. Adding any other product to your cart will not allow you to check out. Magazine not included. Specifications for Bear Creek Arsenal BC-15 12.7x42 18in Bolt Action Style Upper Receiver: Manufacturer: Bear Creek Arsenal Caliber: 12.7x42mm Barrel Length: 18 in Barrel Profile: Heavy Barrel Twist Rate: 1-20 Firearms Threads Per Inch