Trijicon Bright & Tough Suppressor Height Night Sights, Fits Glock 20/21/29/30, Tritium Front/Rear, Green 3 Dot GL204-C-600689 TRIJICON SUPPRSR NS GRN FOR GLK 10MM: Trijicon Bright & Tough(TM) 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.