Meprolight Tru-Dot Tritium Night Sight Set for AR-15, M-16, M-4 (Four Green Dots)

The Tru-Dot Tritium Rear Night Sights for AR-15 from Meprolight is a sight system with glowing dots that are visible under poor light conditions, including total darkness. Five dots align horizontally and vertically, forming an easily discernible sight picture. The sight can withstand stout recoil, harsh field conditions as well as solvents. This model is compatible with AR-15 pattern rifles. The set includes a front sight and a rear sight aperture with four green dots; one on either side, as well as top and bottom. This arrangement allows you to center the front sight between four reference points around the aperture. The rear sight includes the aperture only and will fit both A1 and A2 sight housings. Self Illuminated light source - no batteries or switches, always ready when you need them Operates under all light and weather conditions Totally integrated day/night sighting Can be mounted directly in place of factory sights, with no modifications Maintenance-free