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How much does a M1A2 Abrams tank round weigh? - Quora
Why didn't the US Army make smoothbore firearms and fin-stabilized bullets like they did to abrams tank main gun? - Quora
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South African Surplus 5.56x45 M193 55 Grain Full Metal Jacket For Sale In Stock
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South African 7.62 NATO question
Sections - General Ammunition Discussion - International Ammunition Association Web Forum
5.56×45mm NATO, Vietnam War