The Daniel Defense AR-15 Iron Sight Set is built from the highest quality aircraft grade aluminum and will never let you down. Unlike our belief in the fact "all men are created equal," AR-15 sights are not. Accuracy and usability depend on quality sights. Consisting of the A1.5 Fixed Rear Sight and Rail-Mounted Fixed Front Sight, this iron sight set will provide a lifetime of service. The A1.5 Fixed Rear Site makes the optimum back-up sight for shooters using today's most popular reflex optics. The Rail Mounted Fixed Front Sight makes it unobtrusive and snag-free, and allows the operator to facilitate the use of compact weapon-lights forward of the sight, such as the X3 Mfg: Daniel Defense