December 11, 2013 A look at the Battle Arms Development Enhanced Pivot and Takedown Pin Set (BAD-EPS) for AR-15/M4/M16 rifles. 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)