Hk-39

A German 20mm anti-aircraft gun, mounted on a Sd.Kfz. 234/2 Puma armored car, used by the Luftwaffe during World War II, providing mobile anti-aircraft defense.

Hk-47

A German 20mm anti-aircraft gun, mounted on a towed carriage, used by the Luftwaffe during World War II, providing mobile anti-aircraft defense.

Hk-23

A German 20mm anti-aircraft gun, mounted on a Sd.Kfz. 251 halftrack, used by the Luftwaffe during World War II, providing mobile anti-aircraft defense.

Hk-31

A German 20mm anti-aircraft gun, mounted on a Panzer III tank, used by the Luftwaffe during World War II, providing close-range anti-aircraft defense.

Hk-15

A German 20mm anti-aircraft gun, employed by the Luftwaffe during World War II, known for its rapid fire rate and effectiveness against low-flying aircraft.

Gh.K. 40

A German 20mm anti-aircraft cannon used extensively during World War II. It was a highly effective weapon against low-flying aircraft, but it was also used in an anti-tank role. It was known for its high rate of fire and accuracy.

Gh.K. 40 (Anti-Tank Rifle)

A German anti-tank rifle used during World War II. It fired a 20mm high-velocity round, capable of penetrating early tank armor. It was cumbersome and less effective against later tanks, but it was still used by German infantry.

Gc 20/74 (Germany)

A late-war variant of the Gc 20, featuring a simplified design and a focus on ease of production. It was primarily used for stationary anti-aircraft defense.

Gc 20/75 (Germany)

This version of the Gc 20 was designed for use in armored vehicles, providing close-range anti-aircraft and anti-personnel defense.

Gc 20/76 (Germany)

A further refinement of the Gc 20, this version introduced a new type of ammunition with improved performance against armored targets.