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 .22LR For Self-Defense? Understanding the FBI’s Ammo-Testing Protocol New Revolvers for 2024 It’s All About the Student New Large Format Pistols for 2024 New Bolt Action Rifles for 2024