2 cm Flak 30, Flak 38 and Flakvierling 38

2 cm Flak 30/38
2cm Flak 30 in travel configuration at Saumur
Type	Anti-aircraft gun
Place of origin	Nazi Germany
Service history
In service	April 1934–1945
Used by	See Users
Wars	World War II
Production history
Manufacturer	Rheinmetall-Borsig Mauser Ostmarkwerk
Unit cost	3500 Reichsmark
Produced	1934–1945
No. built	more than 144,000[1] (Flakvierling count per barrel) Flak 30: 8,000+ Flak 38: 40,000+
Variants	2 cm Flak 38, Gebirgsflak 38, Flakvierling 38
Specifications
Mass	Flak 30: 450 kg (990 lb) Flak 38: 405 kg (893 lb)
Length	4.08 m (13 ft 5 in)
Barrel length	1.3 m (4 ft 3 in) L/65
Width	1.81 m (5 ft 11 in)
Height	1.6 m (5 ft 3 in)
Crew	5
Shell	20×138mmB
Caliber	20 mm (.79 in)
Elevation	-12°to ±90°
Traverse	360°
Rate of fire	Flak 30: 280 rpm (cyclic)/120 rpm (practical) Flak 38: 450 rpm (cyclic)/180 rpm (practical)
Muzzle velocity	900 m/s (2,953 ft/s)
Effective firing range	2,200 m (2,406 yds) (anti-aircraft)
Maximum firing range	5,783 m (5,230 yds) (ground range)
Feed system	20 round box magazine

The Flak 30 (Flugzeugabwehrkanone 30) and improved Flak 38 were 20 mm anti-aircraft guns used by various German forces throughout World War II. It was not only the primary German light anti-aircraft gun but by far the most numerously produced German artillery piece throughout the war.^[1] It was produced in a variety of models, notably the Flakvierling 38 which combined four Flak 38 autocannons onto a single carriage.