Due to its rim dimensions and tapered shape, the 300 BLK could function with a standard 5.56 NATO bolt and standard 5.56 magazine ... take a look at the 300 AAC Blackout.

300 AAC Blackout. The .300 AAC Blackout was developed by Advanced Armament Corp. as a more-powerful caliber for AR-15 (M4) rifles using standard magazines without sacrificing ammo capacity.

What’s so special about the 300 Blackout? Ammo is easy to find and relatively inexpensive. Hunters can use the 300 BLK in AR-15-style rifles and magazines but with significantly heavier and ...

NORTH HAVEN, CT – O.F. Mossberg & Sons, Inc., is expanding their MVP Patrol bolt-action rifle series with a 300 AAC Blackout (300 ... with the convenience of AR-magazine compatibility.

The 300 Blackout rifle and cartridge were born out of a request by the U.S. Special Operations Command. While the 300 BLK saw limited use in the military, it’s been accepted widely by hunters and ...

300 Blackout, developed by U.S.-based Advanced Armament Corporation, uses a 5.56mm case cut down to accept the .30-caliber bullet, so the larger round can be used with the bolt and magazine of ...