October 31, 2013 An overview of the 300 AAC Blackout and comparison with to the 5.56 NATO and 7.62×39 rounds. Share this gun video:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)