The Tru-Dot Tritium Night Sight for Remington 870, 1100, 11-87 Post-09 from Meprolight is a sight system with glowing dots that are visible under any light condition, including total darkness. When used as a complete set, the three dots align horizontally, forming an easily discernible sight-alignment. The sight can withstand stout recoil, harsh field conditions as well as solvents. This model is compatible with post-2009 production Remington 870, 1100 and 11-87 slug-guns, and includes front and rear sights with green dots.