by Richard Mann posted on December 13, 2010 Optics Support NRA Shooting Illustrated DONATE Using Iron Sights on an AR-15 In this article AR, BUIS, iron sights, Magpul, XS Sight Systems, zeroing Related Stories Magpul MBUS Pro Offset Iron Sights XS Sight Systems Angle Mount Sights XS Sight Systems XS Sight Systems Gallery YHM Flip Rear Sight Most Popular Shotguns and Magazines Nothing New The Low Ready Position 9mm Double Stack 1911 Pistol Roundup Review: Lipsey’s Smith & Wesson Ultimate Carry Revolver Review: Show Low Manufacturing Black-Jack Rifle