Trijicon, Tritium Night Sight, Fits Glock 17,19,26,27,33,34, Green/Green, 3 Dot
TRIJICON NS FOR GLK 17 19 26 27: Trijicon Bright & Tough Night Sights are three-dot iron sights that increase night-fire shooting accuracy by as much as five times over conventional sights. Equally impressive" they do so with the same speed as instinctive shooting - and without the need for batteries.