1927, Stevens M620 it was a pump-action side shotgun. And had improved versions of John Moses Brownings. The firearm was available in 12-, 16- and 20-gauge and offered in 26-, 28-, 30- and 32- inch barrel length. As with many other pump-action types, the M620 featured a five shell magazine.
1938, M1 Thompson (Tommy Gun) sub machine gun. Created by John Taliaferro Thompson. Used in world war 1. Also used in world war 2. Used in the Chinese civil war, the Vietnam war, the Korean war, and Bosnian war. 20 or 30 round magazine.
1946, Ithaca 37 stakeout combat shotgun is a law enforcement shotgun. The shotgun is nearly 75 years old. People in the military used it, and it was used for home defense. 4 round magazine.
The most important gun is the Tommy Gun because of how much ammo the gun carries and it was small it was better to move around with the gun.