Trijicon Tritium Night Sight, Fits Glock 42 and 43, Green Finish GL13-C-600777 TRIJICON NS FOR GLK 42: 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.