Trijicon Suppressor Sights - For Glock Large Frames . Equally impressive they do so with the same speed as instinctive shooting - and without the need for batteries. Housed in a metal body and cushioned within silicone rubber Bright & Tough Night Sights feature a unique shock-resistant design. Each lamp is capped with a sapphire jewel to help evenly distribute the light while protecting the lamp from solvents and puncture. Contained within aluminum cylinders for additional protection the lamps are mounted on silicone rubber cushions to withstand shock and heavy recoil. Yellow lamps are warranted for 12 years from the date of manufacture. Specifications for Trijicon Suppressor Sights - For Glock Large Frames TJ-GL204: Manufacturer: Trijicon Gun Make: Glock Package Contents: Trijicon Suppressor Sights - For Glock Large Frames Trijicon Suppressor Sights - For Glock Large Frames - GL204-C-600690