AmeriGlo Tritium Rear Sight Features The AmeriGlo Tritium Rear Sight uses Swiss made tritium capsules housed in a steel body giving shooters a glowing reference point that works day or night without batteries or external light sources. The two dot green tritium inserts are ringed in white outlines creating strong contrast against the front sight picture and making target acquisition faster under stress. Its classic square notch profile is cut for a crisp sight picture that pairs naturally with a wide range of front sight styles. Because tritium is a self powered light source this sight maintains its glow for years giving owners a long service life without maintenance. Designed to mount via dovetail the AmeriGlo rear sight fits Sig Sauer pistols as well as Springfield Armory XD models and the Hellcat excluding the OSP optics cut variant. The black frame finish keeps the sight discreet while the tritium dots stand out clearly against it. Installation follows standard dovetail sight procedures making it accessible for armorers and experienced owners alike. For defensive shooters and range enthusiasts who rely on their pistol in varying light conditions this rear sight is a dependable purpose built upgrade available for sale at GrabAGun. AmeriGlo Tritium Rear Sight Specifications Manufacturer: AmeriGlo Model: Tritium Rear Sight for Springfield XD/Hellcat Compatible Hosts: Sig Sauer Springfield XD Hellcat (Non OSP) Material: Steel Sight Style: 2 Dot Square Notch Rear Mount Type: Dovetail Color: Green Tritium Frame Color: Black Available At: GrabAGun