The Iconic American WW2 Thompson: the M1A1
This expert guide details the significant design simplifications made to the M1A1 Thompson submachine gun during World War II, transforming it from the complex 1928A1 model into a more cost-effective and efficient firearm. It highlights key changes like the adoption of a straight blowback action, a simplified bolt, and external modifications to streamline production, as explained by firearms expert Ian McCollum.










