the sig sauer mpx

The Sig MPX is a gas-operated submachine gun primarily chambered in 9x19mm rounds. It is a weapon of Swiss design and is the first submachine gun to feature a fully closed and rotating bolt system, This is to enhance the safety of the user. It was designed in 2013 and released to the general public in 2014. It Features a SIG-Sauer short stroke pushrod gas system to reduce recoil and improve the reliability of the weapon. The weapon features a system that allows for conversion from 9mm to .357 SIG or .40 S&W.