Błyskawica submachine gun
| Błyskawica | |
|---|---|
 |
|
| Type | Submachine gun |
| Place of origin |
 Poland
|
| Service history | |
| Used by | Poland |
| Wars | World War II |
| Production history | |
| Designed | 1943 |
| No. built | ~700 |
| Variants | none |
| Specifications | |
| Weight | 3.22 kg |
| Length | 556/730 mm |
| Barrel length | 197 mm |
|
|
|
| Cartridge | 9×19mm Parabellum |
| Action | blowback |
| Rate of fire | 600 round/min |
| Muzzle velocity | 400 m/s |
| Effective firing range | 200 m |
| Feed system | 32-round box magazine |
The Błyskawica (Polish for lightning), was a submachine gun produced by the Armia Krajowa, or Home Army, a Polish resistance movement fighting the Germans in occupied Poland. Together with a Polish version of the Sten sub-machine gun, with which it shares some design elements, it was the only weapon mass-produced covertly in occupied Europe during World War II.
In 1942 engineer Wacław Zawrotny proposed to the Armia Krajowa command that he and his colleagues prepare a project of a cheap, home-made machine pistol for use by the Polish resistance. Its main feature was its simplicity, so that the weapon could be made even in small workshops, by inexperienced engineers. The idea was accepted, and Zawrotny, together with his colleague Seweryn Wielanier, prepared a project of a sub-machine gun, soon afterward named Błyskawica (Polish for "lightning"). To allow for easier production, all parts of the weapon were joined together with screws and threads rather than bolts and welding, which were commonly used in firearm production ever since the 17th century.
The design was based on two of the most popular machine pistols of the era. The external construction with a retractable butt and magazine mounted below the gun was borrowed from the successful German MP 40. The internal design of the mechanism was modeled after the British Sten. Blowback, with an open bolt, it offered good performance and high reliability. Unlike the Sten, and its Polish clone called the Polski Sten, it employed a free-floating firing pin and two springs behind the bolt - one served as the return spring and the other as the buffer spring (similar to the later Sterling submachine gun). The weapon was designed in this fashion so that resistance army members could use any captured stocks of German MP40 ammunition cartridges.
...
Wikipedia