The.300 aac blackout cartridges were developed by advanced armament corporation (aac) for use in the m4 carbine to achieve ballistics similar to the 7.62x39mm supersonic cartridge, and to offer a subsonic yet powerful cartridge for the ar15 platform as an alternative to the mp5sd 9mm, all while utilizing a standard (stanag) magazine.Our barnaul.300blk, available now, is a 145-grain supersonic cartridge with a polymer-coated steel case.This is the most affordable.300blk ammunition on the market today.A.300blk subsonic cartridge is a heavy, lower-velocity round perfect for pairing with a suppressor.Using subsonic cartridges with a suppressor helps to eliminate the "crack" that is inherent with supersonic cartridges, reducing noise levels down to a safer volume.

Caliber: 300 Blackout
Bullet Type: Full Metal Jacket (FMJ)
Bullet Weight: 145 gr
Muzzle Energy: 1268 ft lbs
Muzzle Velocity: 1985 fps
Rounds Per Box: 20
Boxes Per Case: 25
Application: Target
Casing Material: Poly Coated Steel
Hazair: Yes

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