XS RAM (Radioactive Material) tritium night sights feature a traditional 3 dot tritium, notch and post sight picture. The rear is blacked out to increase contrast against the front sight. The front sight is available in orange or green and is equipped with our Ember Glow Dot Technology. Ember absorbs ambient light and glows in low light. The front tritium lamp charges the Ember dot making the front sight glow brighter than the rear, keeping focus down range. RAM sights are the brightest options for fast and accurate shooting in bright and low light.Features: Tritium powered front and rear sight - glows in low light to aid in sight alignment High-contrast color front sight Ember glow dot - photo luminescent dot absorb ambient light and glows in low light Rear sight overhang - reduces rear sight glare in bright light for greater sight definition Anti-reflective rear tritium lens - reduces glare in bright light and increases contrast against the front sight Rear sight ledge - aids in 1-handed slide manipulations CNC steel - extremely durable for duty use Easy installation - easily install by hand or sight pusher tool 10 years warrantySpecifications: Type: Front/Rear Series/Collection: RAM Material: Tritium Front and Rear, Steel Frame Color: Green Front and Black Rear For Use With: Glock 20, 21, 29, 30, 30S, 37, 41 Pistols Dimensions: 8" x 5" x 1-1/4" Blade Width: 0.145" Notch Width: 0.17" Overall Height: 0.215" Front, 0.34" Rear