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.
This Thompson M1928 submachine gun is a sinister looking weapon; every time you hold it, you have an urge to put on a fedora hat and crack your knuckles. The Thompson is well-fed by a large 50 round drum magazine. Like the Grease gun, the Thompson is pretty powerful, but fires nondescript .45 rounds.
Used by the tribes in Zion Canyon, the .45 Auto SMG is a relatively robust gun that offers heavy firepower. Unfortunately, the result is that this gun requires two hands to operate. Also, the heavy recoil means that this SMG cannot be used by frail individuals and accuracy will suffer in long-distance engagements.