February 9, 2014 A review of AR-15 buttstocks including the Magpul CTR and STR, as well as the Vltor IMod and EMod. 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)