M1A1 Legendary 4.5mm FULL AUTO. Amazing air gun by UMAREX, a replica of the legendary Thompson. It is entirely made of metal, and its stock is plastic in wood color. The magazine holds two 12 gr CO2 cartridges together (for more shooting autonomy) and 30 steel 4.5mm BBs in the front. The rear sight is foldable and the bolt cycles (Blowback) during shooting. It features a safety and SEMI AUTO – FULL AUTO modes. Its color is antique (like faded) to transport us as much as possible to that era. The M1A1 Legendary 4.5mm FULL AUTO has incredible build quality and is ideal for endless shooting fun.