The brite-site tfx features fully-protected tfo technology encapsulated in a virtually indestructible configuration, impervious to oils, chemicals, cleaning solvents, and ultra-sonic cleaning processes.These sights provide unmatched visibility in all shooting conditions, 24/7, utilizing swiss tritium for maximum brightness.Glowing in the dark without the use of batteries, the concealed fiber cannot be seen by target.Additionally, tru-glo's fortress finish provides a permanent protective coating for maximum protection and this snag-resistant design fits standard holsters.This model is compatible with 1911 pistol with novak.260-.450.Rear Color: GreenType: Tritium/Fiber Optic SetFrame Material: SteelFrame Color: BlackFirearm Fit: 1911 PistolBase Configuration: Novak .260-.450Style: 3 DotFront Material: Tritium/Fiber OpticRear Material: Tritium/Fiber OpticFront Color: Green w/White OutlineWindage Adjustment: NoElevation Adjustment: NoFirearm Type: Handgun