Ballistic Advantage AR-15 Modern Series 13.7 In Barrels 5.56mm NATO 1/2-28 Muzzle Thread 1-7 Twist
Barrel Weight: 25 Oz Cartridge: AKK_5.56 mm Nato Contour: Government Finish: Black Gas System Length: Mid-Length Length: 13.7'' Make: AR-15 Make/Model: AR-15 Muzzle Threads: 1/2-28 Twist: 1-7
