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Nicholas Drummond on Twitter: "Northrop Grumman 20x102 mm ammunition is used by the Royal Navy's CIWS. It's also being used by US Army's FARA future light attack helicopter. Possibly an alternative to
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Bottle Openers Tool 20 Mm Caliber M61 Vulcan, PNG, 900x1174px, 20 Mm Caliber, Pen, Ammunition, Bottle
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