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'''.300 AAC Blackout''' is a type of [[ammunition]] for firearms. It is classified as a <span style="color:#AA0000">'''(R)'''</span>ifle caliber. .300 AAC Blackout is primarily intended to give the [[AR-15]] platform a suitable .30-caliber (7.62mm) alternative to [[5.56x45mm]] with minimal changes. It is fully compatible with all [[STANAG magazines]].
.300 AAC Blackout is pronounced ''three hundred A-A-C Blackout''.