The Trijicon Fiber Optic Sight Set for Glock Slimline Frames is a premium, high-visibility open iron sight system engineered explicitly for subcompact and micro-compact pistols. Drawing from advanced light-gathering chemical principles pioneered in Trijicon's battle-proven ACOG series, the front post concentrates ambient daylight to deliver an ultra-brilliant focal point without using electronic battery power. The design matches a narrow, nimble 0.110-inch front post with a non-illuminated, glare-resistant square-notch rear blade designed to absorb distracting reflections and isolate your visual focus cleanly on the threat. CNC-machined entirely from robust solid steel and protected by a robust finish, the assembly effortlessly survives the severe g-forces of slide cycle recoil and aggressive holster friction. Furthermore, the rear sight is contoured with a steep, hard-angled front ledge explicitly engineered to enable situational, emergency one-handed slide cocking against a belt or rigid barrier.