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 ...

Best Ultralight: Q Mini Fix SBR How I Chose the Best 300 Blackout Rifles I talked to David Stark, the president of Discreet Ballistics who manufactures some of the best 300 Blackout ammunition ...