20×102 mm

20 mm cartridge, known for its use in M61 Vulcan. 
20×102, 20×102 mm Vulcan, 20 mm Vulcan, 20mm Vulcan, 20x102, 20x102 mm, 20x102mm, 20x102 mm Vulcan

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Wikidata
cartridge family, United States, weapon model, 

20 mm cartridge – cannon cartridge – cartridge – 

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