20mm South African M1A2 Target Practice Round HS820 20x139 inert shell ammo
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Inert 20mm South African M1A2 Target Practice Round used in the HS.820. This 20x139mm shell casing is made of steel and is in good condition. Markings can be clearly seen. The HS.820 is a 20mm autocannon developed by Hispano-Suiza primarily for aircraft use, but more widely used in a series of ground-based anti-aircraft guns.