The M55 anti-aircraft gun was a vehicle or tripod-based, three-barreled light anti-aircraft gun chambered for the 20x110mm Hispano cartridge.
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Ian McCollumEvidence Quote
“Typically it was a vehicle or tripod based, 3 barrelled light anti-aircraft gun chambered for the 20x110mm Hispano cartridge.”
Created: 8/13/2026, 7:43:37 AM
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