Fits Sig Sauer models calibrated for 9mm and .357SIG, including: P225, P226, P228, P239, and P320 (Excluding P938). Behind Trijicon fiber sights is years of engineering and manufacturing experience in producing the industry's leading night sight and fiber illuminated scopes and sights. Featuring similar fiber optic materials used in several Trijicon fiber optic scopes and sights, including the battle-proven ACOG, the Trijicon fiber sights are purposely engineered to bring the absolute brightest aiming point while retaining strength and maintaining a refined sight picture. Trijicon fiber sights come from the factory with a 0.060 inches red fiber pre-installed on the front sight, and an extra red and green fiber replacement in the package. Whether carrying or competing, these bright, thin sights create the perfect aiming point for fast, accurate rounds on target.Features:Highly visible front sight - a bright front post fiber (0.06 inches diameter) combined with a subdued rear sight promotes acquisition of front sight and targetClear, precise sight picture - a thin front post (0.11 inches width) allows for a refined sight picture in a variety of shooting environments and distances and gives a better field of view for longer range engagementsWithstands rigorous shooting, rough handling, and aggressive holster use - using leading edge fiber technology and Trijicon's legendary rugged metal construction, this fiber sight maximizes retention and durability1-handed return manipulation - steeply hooked front surface of rear sight assists in emergency 1-handed slide manipulationsComfortable to conceal - rounded edges of rear sight reduce snag points for improved comfort while carryingComparable to #8 rear sight style