Original Soviet WWII 20mm ShVAK Cannon Cartridge – Inert
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SKU: ONAS1040M Category:


Original Item: Very Few Available. These are inert cartridges for the Soviet WWII 20×99mmR ShVAK Cannon offered in very good condition.

The 20 mm ShVAK was designed sometime between 1935 and 1936 and series production began in 1936. A few months later, production of the 12.7 mm version ceased. Similarly to its predecessors, the 20 mm ShVAK was a gas-operated gun, belt-fed by disintegrating link ammunition.

Depending on the intended mount, the ShVAKs were marked with “MP” for the tank version (total gun length 2122 mm; weight 44.5 kg), “KP” for the wing-mounted version (1679 mm total length; 40 kg), “TP” for flexible mounts (1726 mm length; 42 kg), and “SP” for synchronized installations.

The “bird-cage” feed system in the 20 mm ShVAK was an improved version of the ShKAS. It could hold 11 rounds and had an even smoother operation. As with the ShKAS, the purpose of the feed cage was to gradually delink the rounds, avoiding any belt lurch. The Berthier-type gas regulator had four holes (of 3.5, 4, 4.5, and 6 mm) allowing for different rates of fire to be selected.The most significant design difference from the ShKAS was that the gas cylinder was moved under the barrel in the ShVAK, giving it a more compact assembly.

The end of the barrel was threaded, and this thread was used to screw on a blast-reduction tube of a length that depended…

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