Karabin lotniczy wz. 37
7.9 mm machine gun aircraft armament
The karabin lotniczy obserwatora wz. 37 (Polish for "observers aviation rifle pattern 1937") is an aerial machine gun, a development of the ręczny karabin maszynowy wz. 28. It was designed as a manually operated machine gun for defensive firing positions on board combat aircraft of Polish Military Aviation.
History
In the mid-1930s, Polish small arms designer Wawrzyniec Lewandowski was given the task of developing a flexible gun based on the rkm wz. 28 light machine gun. The desired changes included raising the cyclical rate of fire to 1100 rds/min, replacing the buttstock with a spade grip at the rear of receiver, moving the main spring under barrel and, most importantly, changing the feed system.
The gun's original 20 round box magazine was impractical with the gun's high rate of fire. A new feeding mechanism was added as a pack to the standard receiver. It contained a spring-loaded lever, which when cammed by the lock during locking would grab a round from a 91-round pan magazine located above the receiver and force the round into alignment to feed during unlocking.
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This entry incorporates text from “Karabin lotniczy wz. 37” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.