Tommy gun

The Tommy gun is a nickname for the Thompson submachine gun that appears in Fallout 2, Fallout Tactics, and the Fallout: New Vegas add-on Honest Hearts.

Background
The Thompson was has been used for many different purposes. The United States military used the Thompson throughout World War II and the Korean Wars, but mobsters have also been able to get their hands on this weapon, as evident by many mobsters strolling through New Reno.