New in factory hard case, just received from Fostech, Taking advantage of our patented infinite gas system, 3-point operational finger position, and quick-change barrel system, the shotgun is sure to pack quite the punch. Whether for home defense, or some fun downrange. All Origin Shotguns include a five-round magazine and hard case, are threaded for salvo suppressor (Saiga adapter required from SilencerCo), and make use of a Picatinny rail system. They have a smooth bore barrel (not rifled) and a muzzle thread with specifications of M22 X .75 -6G