The AmeriGlo GL8113R Tritium Rear Sight for Glock delivers a proven, rugged illuminated option with Green Tritium 2-Dot White Outlines for handgun performance in low light. Built to fit all Glock models, this rear sight combines a compact .276" height with a .165" square notch to provide quick, intuitive alignment and a sharp sight picture under various conditions. AmeriGlos renowned Tritium illumination offers reliable visibility without external power, enabling faster target acquisition and improved accuracy in dawn, dusk, or indoor range settings. The bold white outlines enhance contrast against dark backgrounds, making transitions between daylight and low-light environments smoother for lifestyle shooters, professionals, and hunters alike. Designed to withstand variable recoil and rugged use, the GL8113R complements Glock pistols by preserving a clean line of sight and maintaining zero through countless rounds and conditions. Whether upgrading factory sights or rechambering for duty, sport, or personal defense, this sight delivers consistent performance, quick reholstering feedback, and a dependable glow that helps you stay on target when it matters most.