300 AAC Blackout, SAAMI short name 300 BLK, also known as 7.62×35mm is a rifle cartridge developed in the United States for use in the M4 carbine. Both . 300 BLK and 5.56 NATO are intermediate-class rifle cartridges for target shooting, hunting, home defense, and plinking.

300 Blackout is a formidable ammo choice and is used by both the military and law enforcement around the globe! Everyone knows that the king of intermediate cartridges is the 5.56x45mm NATO round. There is an enormous number of guns chambered to fit it, and all of the major manufacturers of ammunition love it.