The Mepro FT Bullseye Tritium Fiber Optic Rear Sight offers a revolutionary approach to pistol optics designed for enhanced speed and precision. This compact reflex-style sight integrates seamlessly onto your HK VP9 HK45 HK45C P30 or SFP9 (non-OR models) without requiring any adjustments. Constructed with an aluminum frame it combines fiber optic technology for daytime shooting with premium-grade tritium for low-light scenarios ensuring clear visibility in any lighting condition. Its sleek low-profile design fits most standard holsters measuring just 1.63 inches in length 0.71 inches in width and 0.37 inches in height. Enhance your shooting experience with the intuitive and reliable performance of this advanced sight.