The Daniel Defense AR-15 Iron Sight Set is built from the highest quality aircraft grade aluminum and will never let you down. 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 X300, TLR-1, etc.