TRUGLO TFX Pro Brite-Site Day / Night Sight Set For All For Glock Models Except 42 & 43 And M.O.S., U-Notch Rear Sight, Orange Focus Lock Ring Front Sight, Glows In The Dark No Batteries Or Light Exposure Required TG-TG13GLAPC Have the convenience" confidence" and safety of TruGlo TFX Pro sights in both day and night conditions. Quickly acquire the proper sight alignment no matter what lighting conditions. These sights are fully protected TFO technology in a hermetically sealed TFX capsule making them virtually indestructible. The TFX encapsulated Tritium Fiber Optic is a virtually indestructible configuration" that's impervious to oils chemicals" solvents" and ultrasonic cleaning. The glow in the dark Swiss Tritium capsule in the front sight features a contrasting Orange Focus-Lock ring for faster focus and quicker sight alignment. The Swiss Tritium U-notch rear sight features black locking rings to improve front sight acquisition. These CNC machined snag resistant sights are protected with a FORTRESS finish for maximum protection. The aggressively angled rear sight edge is specifically designed for emergency one handed operation racking the slide. When you need a set of bright night sights for your carry pistol" get the toughest most advanced sights on the market" get TRUGLO TFX Pro.