At the end of the day, the 300 Blackout and the 5.56 NATO both serve their purposes well. The 300 Blackout is the real heavy hitter when it comes to power, suppression, and close-quarters situations.

Next to the original 5.56mm NATO/223, the 300 AAC Blackout (BLK for short) is the most popular chambering for the AR-15 platform, and, as a result, manufacturers now pump out a wide variety of 300 ...

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 ...