HIVIZ Litewave Interchangeable Rear Sight for Glock 9mm-40 S&W and 357 Sig Sight - Height is 6.5 mm for use will all Glock model in 9 mm, 40 S&W and 357 Sig. Interchangeable style front sight, includes three litepipes in green, red and black. Litepipes store in litepipe changing key. Features: Sight height is 6.5 mm For use will all Glock model in 9 mm, 40 S&W and 357 Sig Includes three litepipes in green, red and black