10.5 cm FlaK 38

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A Flak 38 105 mm anti-aircraft gun at a Military museum in Belgrade
Type	Anti-aircraft gun
Place of origin	Germany
Service history
In service	1937-1945
Used by	Germany
Wars	World War II
Production history
Designer	Rheinmetall
Designed	1933
Manufacturer	Rheinmetall
Produced	1936-1945
Number built	Approx 2,000
Specifications (Flak 39)
Weight	10224 kg
Length	6.648 m
Barrel length	5.547 m

Caliber	105 mm
Barrels	One, 36 grooves with right-hand increasing twist from 1/48 to 1/36
Breech	Horizontal semi-automatic sliding block
Recoil	Hydropnematic
Elevation	-3 to +85
Traverse	360
Muzzle velocity	881 m/s
Effective range	17,600 m (ground target) 9,450 m (ceiling)
Maximum range	11,400 m (maximum ceiling)

Two views of a Flak 38 105 mm anti-aircraft gun.

Flak 38 105 mm anti-aircraft gun in Military museum in Belgrade

The 10.5 cm SK C/33 was a German anti-aircraft gun used during World War II by the Kriegsmarine on a number of their larger capital ships. It was later adapted for Luftwaffe as a competitor to the famed 8.8 cm FlaK 18 as the 10.5 cm FlaK 38. In this role it proved to be too heavy for field use while having roughly similar performance as the 88, so was used primarily in static mounts. An improved version replacing the electrical gunlaying with a mechanical system was also introduced as the 10.5 cm FlaK 39.