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6 Dummy Trainer NATO 5.56x45 and .223 Remington Ammo Rounds - $9.95 : Cool F/X, stuff that's too cool
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Ammo Bundle | 2x AR-15 5.56x45 Magazines - BLK + 3x Sellier & Bellot SB556A 5.56x45mm NATO Ammo 55 Grain FMJ Ammo - RightToBear.com
Is an AR-15 actually chambered in 5.56x45 NATO or is it made just to handle the .223 Remington since 5.56 is a military cartridge? - Quora
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