AmeriGlo Glock Tritium Rear Sight Features The AmeriGlo Tritium Rear Sight for Glock uses Swiss-made tritium capsules housed in a steel body to deliver a bright reliable glow that holds up for years of carry and duty use. The green tritium 2-dot rear configuration is paired with a white outline which sharpens contrast against the front sight and speeds up target acquisition when ambient light fades. A square notch design keeps the sight picture clean and consistent helping shooters align the front sight quickly under stress. The dovetail mount fits the factory slide cut on compatible Glock models so installation does not require any slide modification. Machined from steel rather than cast or polymer construction this rear sight is built to withstand recoil cycling and holster wear without the dots loosening or shifting. The 0.276 sight height matches factory specifications preserving a proper sight picture with a standard front sight and avoiding the need to swap both sights as a set. Compatibility covers Glock Gen 1 through Gen 5 models excluding the 42 43 and 28 variants making this a straightforward upgrade for a wide range of existing Glock pistols. Whether the pistol is carried for personal defense or used for duty and range work the AmeriGlo Tritium Rear Sight for Glock gives shooters a dependable low-light aiming reference they can trust. AmeriGlo Glock Tritium Rear Sight Specifications Manufacturer: AmeriGlo Model: Tritium Rear Sight for Glock Type: Handgun Sight Sight Style: 2 Dot Square Notch Rear Rear Color: Green Tritium Outline: White Material: Steel Mount Type: Dovetail Sight Height: 0.276 Compatible Hosts: Glock Gen 1-5 Excluding 42/43/28 Available At: GrabAGun