The Thompson SMG is the classic submachinegun from which all others are judged. Often referred to as the Chicago Typewriter or Gun that made the 20s Roar it was used by both gangsters and law enforcement officers. First developed in 1919 as a trench broom for WWI type fighting, only a handful of that model were built. But soon the Thompson evolved into the elegant model 1921 with the drum magazine. Then came the classic 1928 with the Cutts compensator on the muzzle. During WWII the Thompson was redesigned several times to greatly reduce the cost of manufacture. These models include the Model 1928A1, M1 and M1A1. In this video Course Master Armorer John D. Bush explains the history of the Thompson and will show you many rare manuals and prints. He then takes you inside each of the models of Thompson including the Semi-Auto 1927 A-1. You will see complete disassembly, parts identification and reassembly along with trouble shooting suggestions and repairs. You are shown how the drum magazine is loaded and you will also be treated to a heart pumping live fire demo of each of the models.