Thompson 1921: The Original Chicago Typewriter
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.









