Fiber-Optic Pro delivers a sight picture that is fast and accurate for competitive and recreational shooters. A patented light reflector focuses available light from all angles onto the fiber for a brighter glow, even in low light conditions. Features an Ultra-bright fiber-optic and serrated front sight for fast acquisition, blacked-out and serrated rear sight for increased contrast to reduce glare, fits standard holsters. Fiber diameter: 0.050". Spare Fiber colors included: Yellow, Ruby Red, Green. Fits Walther Q5 Match (front sight only).