.300 AAC Blackout: History, Ballistics, and Ammo Selection
Designed for superior suppressed performance, the .300 Blackout provides shooters with a larger, heavier .30-caliber projectile in a compact package compatible with a standard-size AR-15 rifle. This addressed many of the limitations of the 5.56 NATO in close-quarters combat. The cartridge functions with standard AR-15 magazines and bolts, and it only requires a barrel swap…

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