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 New Handguns for 2023 10 Budget-Priced .22 Rifles Under $200 Weird Shotgun Loads Top 5 'Budget-Priced' .50 BMG Rifles Review: Taurus Judge Executive Grade New Guns for 2023