XS Sight Systems F8 Tritium Night Sight Set for Sig P320/P226/P229/P225, Springfield XD/XDM/XDS & FN 509

The XS Sight Systems F8 night sight set is built around XS's signature "straight eight" concept - a large, high-contrast front tritium dot aligned over a wide U-notch rear so the eye locks onto the front post for faster sight acquisition in any light. The front features a 0.160" tritium dot with a bright orange outline ring for daylight visibility, paired with dual green tritium vials in the rear sight. Tritium vials are self-illuminating - no batteries or ambient light source required - and are rated to glow for approximately 10 to 15 years.

This specific configuration (model SIF012P5) is engineered to fit Sig Sauer P320, P229, P228, P226, and P225 pistols, the Springfield XD, XDM, XDS, and XDE lineup, and the FN 509. Whether you are running a duty gun, EDC pistol, or home-defense handgun, the F8's oversized front sight profile makes target identification and indexing faster than traditional three-dot systems, especially in transitional light, low-light, and night-time defensive use.