The Denel Vektor GA-1 is an automatic cannon based on the German WWII MG 151/20 automatic cannon.

Compared to other rapid-fire 20 mm autocannons, it is lightweight and has low recoil due to its design and the use of the 20×82mm cartridge.

The weapon was intended for use in vehicles, naval vessels, and helicopters.

[1] One gun was fitted to the Atlas XH-1 Alpha attack helicopter demonstrator.

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