Upgrade your competition or training Glock with XS Sights Fiber Optic sights precision CNC-machined components designed for fast sight acquisition, accurate alignment, and simple installation. The kit pairs a bright green fiber optic front insert with a serrated rear sight to reduce glare and keep your focus on the front blade. Built for competition and range use, these sights fit Glock generations 1 5 (including MOS models) and include a replacement fiber rod and instructions for easy user maintenance. Product Details Fits Glock generations 1 5 Compatible with Glock MOS models Front sight: .215" tall .125" wide with green fiber optic insert Fiber diameter: .060" (gathers and fluoresces light for high visibility) Rear sight: .145" wide notch with crisp edges for fast acquisition and precision alignment Serrated rear face to prevent glare and improve front-sight focus User-replaceable fiber optic insert (replacement orange fiber rod included) CNC machined in Fort Worth, TX Ideal for competition, training, and first upgrades Kit includes: front sight with green fiber installed, rear sight, replacement orange fiber rod, insert, and instructions