Pistol-caliber carbine. Straight blowback operation. Ambidextrous bolt can be configured to right or left ejection. Lightweight barrel with threaded end and thread protector. .578x28 right hand threads. Free floating quadrail forend. Picatinny rail machined into top of receiver. Commercial buffer tube and pistol grip. Receiver trigger housing and magazine well machined from 6061T-6 aluminum. Accepts Glock or Glock compatible magazines. Made in the USA.Features: Barrel Length : 17 Caliber : .45 ACP Capacity : 13 Finish : Black