The Trijicon Fiber Optic Sight Set for Glock MOS is engineered to deliver an ultra-bright, exceptionally clear aiming point for competitive shooters and tactical enthusiasts alike. Utilizing the same advanced fiber-optic material concepts proven in Trijicon's legendary combat optics, this iron sight set maximizes ambient light collection to ensure immediate front-sight focus. The design pairs a highly visible 0.060-inch interchangeable fiber front post with a completely blacked-out, subdued rear notch to streamline target acquisition and eliminate visual clutter. Specifically tailored to accommodate the unique rear dovetail placement found on Glock Modular Optic System (MOS) pistol slides, it balances clean clearance without overhanging the back edge of the slide frame. Precision-machined from robust steel with rounded, snag-free edges, the rear blade features a steeply hooked front face optimized for emergency, one-handed slide manipulations. Trijicon Fiber Optic Sight Set w/ Red or Green FS for Glock MOS 9mm & .40 S& W 601188