by Richard Mann posted on December 13, 2010 Optics Support NRA Shooting Illustrated DONATE ** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. ** 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 Top 5 'Budget-Priced' .50 BMG Rifles Shotguns: Cleaning Tips for Your Shotgun First Look: Smith & Wesson Model 1854 Lever-Action Rifle in 360 Buckhammer 10 Budget-Priced .22 Rifles Under $200 Handguns: Carry Rotation Downside Greatest Defensive Semi-Automatic Shotguns