Like the 300 Blackout, it is based on a 223 Remington case, and according to the Sporting Arms and Ammunition Manufacturer’s Institute’s (SAAMI) specifications, it has a maximum overall length of 2.25 ...
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.
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