Bear Creek Arsenal BC15 12.7x42 Right 18in Right Upper Receiver Heavy Mid-Length 1-20 5/16x24 Flash Hide Parkerized FDE

Bear Creek Arsenal BC15 12.7x42 Right 18in Right Upper Receiver Heavy Mid-Length 1-20 5/16x24 Flash Hide Parkerized FDE. BCA AR15 bolt carrier group and a side charging (Gen 2) handle (patent pending). This 12.7x42 is compatible with any mil-spec AR-15 lower. This has the new handguard. Specifications for Bear Creek Arsenal BC-15 12.7x42 18in Right Side Charging Upper Receiver: Manufacturer: Bear Creek Arsenal Caliber: 12.7x42mm Barrel Length: 18 in Barrel Profile: Heavy Gas System Length: Mid L