January 6, 2014 A live fire demo of Tandemkross 10/22 magazine accessories, including the 10/22 Magazine Bumper & Doubler. 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)