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5.56 vs 5.45: Differences and Similarities
What is the difference between 5.56 X 45mm and 5.56 NATO round? - Quora
Comparing Bullets: 5.56x45mm vs 6.8x43mm - SkyAboveUs
Winchester USA White Box 5.56mm NATO 55gr FMJ Rifle Ammo - 150 Rounds | Sportsman's Warehouse
5.56 60 V-MAX New | Freedom Munitions
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IMI Ammo 5.56x45mm 77 Grain Razor Core (Sierra MatchKing Hollow Point
