Ww2colourised - A female worker is testing a 20 mm cannon at the Aberdeen Proving Ground, 1942. The Hispano-Suiza HS.404 was a French 20 mm autocannon used in a number of air
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1/24 MASTER MODEL AM24004 HISPANO 20mm CANNON for MOSQUITO (for AIRFIX ) | eBay
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The Pacific War Online Encyclopedia: Hispano-Suiza 20mm Cannon
20mm hispano projectile that I found. : r/Warthunder
Hispano-Suiza HS.404 - Wikipedia
The South African Air Force
Hispano Mk.II - WW II British aircraft cannon 20mm (4 pcs) CMK Q48193