MSM Métral Reference Model

STEP and PDF Guide

The Métral submachine gun is a submachine gun designed by Swiss army reserves officer Gérard Métral intended for clandestine manufacture and distribution during foreign occupation circumstances.

It is a blowback, select fire, Uzi type design, open bolt submachine gun, with a side folding stock. The design and function of the parts are based on various existing submachine guns (like Suomi M1931 for the trigger mechanism and Ingram MAC-10 for bolt security etc.), along with some of the author's own innovations and solutions, for example, the bolt construction and folding stock.