Nkm wz.38 FK
Anti-air and anti-tank heavy machine gun/autocannon / From Wikipedia, the free encyclopedia
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The Nkm wz.38 FK (Polish military acronym meaning Heaviest Machine Gun Mark 1938) was a 20 mm heavy machine gun (autocannon by modern terminology) produced in inter-war Poland. It was used both in anti-air and anti-tank role and was also adapted for tank use and mounted on some TKS tankettes. Mass-produced in 1938 and 1939, it was used extensively during the Polish Defensive War of 1939.
Quick Facts Type, Place of origin ...
Nkm wz.38 FK | |
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Type | Anti-air and anti-tank heavy machine gun/autocannon |
Place of origin | Poland |
Service history | |
In service | 1938-1939 |
Used by | Poland |
Wars | World War II |
Production history | |
Designer | Wawrzyniec Lewandowski |
Designed | 1938 |
Manufacturer | Państwowa Fabryka Karabinów |
Unit cost | zl30,000 (tank version)[1] |
Produced | 1938-1939 |
No. built | 55 |
Specifications | |
Mass | 57.6 kilograms (127 lb) |
Length | 2,015 millimetres (79.3 in) |
Barrel length | 1,476 millimetres (58.1 in) |
Width | 202.5 millimetres (7.97 in) |
Crew | 3 (PL 20A mount)/ 6 (PL 20B mount) |
Shell | 20x138mmB |
Shell weight | 320g |
Caliber | 20 mm |
Action | blowback |
Rate of fire | 320-350 rpm |
Muzzle velocity | 856 metres per second (2,810 ft/s) |
Effective firing range | 5,000 metres (5,500 yd)/7,000 metres (7,700 yd) |
Feed system | box(5/10 rounds)/drum(15/100 rounds) |
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