|Full text name||Madsen M1945 submachine gun|
|Caliber cartridge||9mm Luger - 9x19 Luger / Parabellum|
|Overall length, mm||800|
|Barrel length, mm||315|
|Weight empty, kg||3.15|
|Magazine capacity, rounds||50|
|Cyclic rate of fire, rounds/min||850|
Madsen M1945 submachine gun was developed in 1945 by famous Danish arms-making company Dansk Industrie Syndikat AS (DISA), better known for its trade mark “Madsen”. The Madsen model 1945 submachine gun was one of the last “old style” submachine guns, designed for expensive old-style manufacturing techniques that included plenty of milling and machining of steel, rather than stamping and welding. Not surprisingly, this gun was quite expensive and saw little success – it was sold in very limited numbers to Mexico and el Salvador, and within a year after its introduction it was replaced in production with much more simple and inexpensive weapon, the Madsen model 1946 submachine gun.
Madsen M1945 submachine gun is a blowback weapon that fires from open bolt, in full automatic mode only. The design of the bolt and return spring was patterned after the blowback pistols, as the breechblock was attached to the long “slide”, which enclosed the barrel forward of the chamber for most of its length. The return spring was located around the barrel, and the cocking was achieved by gripping the serrations on the sides of the slide and pulling the slide back until the bolt is locked by the sear. The firing pin was a separate movable arrangement, which projected forward from the bolt face only when the bolt was fully in battery, thanks to the internal lever that controlled firing pin movement. The safety was made in the form of the lever, located in the front of the trigger guard. The weapon was put into rifle-type wooden stock, although a version with underfolding stock, made from steel wire, was also briefly promoted. Gun was fed from Suomi-type 50-round 4-stack box magazines. Sights consisted of the front protected post and two separate folding rear blades, marked for 100 and 200 meters.