Features: Tritium front and rear with high contrast glow dot Photoluminescent glow dot absorbs ambient light and glows in low light Wide notch rear with serrations and anti-reflective lens Corrosion resistant Black Nitride surface finish Traditional 3-dot tritium notch and post sight picture Compatible with Glocks Gen 1-5 including MOS models Proudly manufactured in Fort Worth TX Fits Glock 17 19 22 23 24 26 28 27 31 32 33 34 35 36 38 39 45 & 47