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 Gallery XS Sight Systems YHM Flip Rear Sight Most Popular Review: Smith & Wesson Bodyguard 2.0 The Return Of The Lever-Action Rifle Avoid It If You Can Straight Talk: Consider the Source Review: Charter Arms Coyote .380 ACP Revolver The NRA Marksmanship Qualification Program