Developed circa 1941-1942 in response to the British STEN gun, as a substitute for the M1 Thompson SMG which could be produced faster and more efficiently. The majority of these weapons were converted to the "A1" standard after 1944, with the deletion of the cocking crank and a new bolt. Fixed blade front and peep rear sights, with the signature crank on the right side. On the left side of the magazine well is the nomenclature "SUB-MACH. GUN/ CAL. 45 M3" over the Guide Lamp marking and "crossed cannons/ U S NO 296136", with the combination dust cover and safety. NOTE: This weapon is classified by the Bureau of Alcohol, Tobacco, Firearms and Explosives as a "Machine Gun", in 45 caliber. This is a fully transferable NFA Class III Firearm currently on a Form 4. You are required to check your state and/or local laws as to whether or not you may own this. This weapon can be transferred to a Class III dealer at no charge. Buyer pays all other transfer fees and stamps.

Professionally refinished, showing some mild pitting beneath the matte gray, along with some light handling marks overall. Mechanically excellent.