Bravus Tactical reviews the QGK R31 M1911A1 GBB Pistol which is of course an Army Armament R31. The M1911 A1 R31 BK Pistol is an Airsoft imported by QGK that operates on Green Gas. It is Full Metal with a polymer grip, has hop-up adjustment, and a blowback. It is semi-automatic, capable of shooting several shots simultaneously, and the top slide can stop open when out of ammo.