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5 cm FlaK 41
Type Anti-aircraft cannon
Place of origin Nazi Germany
Service history
In service 1941–1945
Used by Nazi Germany
Wars Second World War
Production history
Manufacturer Rheinmetall-Borsig
Produced 1936
Specifications (Flak 41 on trailer[1])
Weight 4,300 kg (9,500 lb)
Length 605 cm (19 ft 10 in)
Barrel length 434 cm (14 ft 3 in)
Width 239 cm (7 ft 10 in)
Height 216 cm (7 ft 1 in)
Crew 7

Shell HE; 2.25 kg (4 lb 15 oz)
Caliber 50 mm (1.98 in)
Breech gas-operated bolt
Carriage 2-axle trailer
Elevation -10°to ±90°
Traverse 360°
Rate of fire 180 rounds/min (cyclic)
Muzzle velocity 840 m/s (2,756 ft/s)
Effective range 3,050 m (10,010 ft)
Maximum range 10,350 m (33,960 ft)
Feed system 5 round clip

The 5 cm FlaK 41 (Flugabwehrkanone 41) was 50 mm anti-aircraft gun produced for defending intemediate zone above the light, 37 mm guns' range, but below the ceiling of the heavy, 75 mm and above, pieces. The gun proved inadequate and was produced in small numbers.

Development of the gun, although started in 1936 was slow, and the contract was awarded to Rheinmetall-Borsig only in 1940. The gun was produced in two models, one mounted on a two-axle trailer, the other one stationary, used for defending important industrial installations. None of the two was a success and both shared the same faults. The speed of traverse was too slow for fast-moving targets and the gun proved underpowered, even though the propellant gave a powerful blast, able to dazzle the aimer even in broad daylight. The relatively heavy cartridge (shell alone weighted 2.2 kg) was cumbersome and heavy when loaded in 5-round clips.[2]

The gun was automatic, gas-operated, locked by breech block dropping down, which engaged the buttress guides on the block against the guides on the jacket. The recoil of the breech operated the feed mechanism. The buffer was mounted centrally in the cradle, between the two springs of the recuperator.[1] At least two of these guns were put in the Messerschmitt Me 262.

Altogether 60 of 5 cm Flak 41 were produced, starting from 1941. Some of them were still in use in 1945.[2]

Later German attempts to create a medium anti-air gun focused on 55 mm weapons (Gerät 58) and the 5 cm Pak 38-derived Gerät 241.


  1. 1.0 1.1 5 cm Flak 41: Antiaircraft Gun Materiel. Technical Manual, War Department, June 29, 1943
  2. 2.0 2.1 Bishop, Chris (1998). The Encyclopedia of Weapons of World War II. New York: Barnes £ Noble Books. pp. 168. ISBN 0-7607-1022-8. 

External links

  • 5 cm Flak 41, Catalog of Enemy Ordnance, U.S. Office of Chief of Ordnance, 1945.

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