November 30, 2013November 28, 2013 A quick look at Brownells AR15 barrels, which are available in multiple calibers. 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)