This entry details the operation of the Thompson Model of 1921, focusing on its iconic drum magazine and select-fire mechanism. Expert Ian McCollum provides a close look at the firearm's internal workings, including the winding of the 50-round drum and the firing cycle. The information is presented with a high degree of technical detail, suitable for enthusiasts and those interested in historical firearms.
The Thompson 1921, also known as the 'Chicago Typewriter,' was the first production submachine gun from Auto-Ordnance. Despite its innovative design, including the flawed Blish Principle, its high price point limited early sales primarily to law enforcement and banks. The Model 1921AC featured a Cutts Compensator and offered various magazine options, though the 100-round drum was cumbersome.
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