Nicholas
The Thompson M1A1 served as the primary sub-machine gun for the United States army for most of the war. The M1A1 was a development of the previous M1 and M1928 Thompsons, but featured improvements such as a charging handle on the side and a simplified production process. Standard capacity was either 20 or 30 round depending on the size of the magazine. The TMS was a very heavy weapon, but also had a very high rate of fire and proved to be highly useful in intense firefights. The British and the Commonwealth nations were also issued them as well.
