In December of 1942 they adopted a new submachine gun, the M3. Built from an all steel construction using mainly stamped parts, it fired from an open bolt and had simple controls. Elon Musk's ...

The M3 had a standard thirty-round or thirty-two-round detachable box magazine. The Thompson also ... Alas, I’ve yet to fire a Grease Gun—something I hope to rectify in a near future trip ...