HiViz SG320FD21 FastDot H3 Sight Set Sig P320 Red Fiber Optic / Green Tritium

The HiViz SG320FD21 FastDot H3 is a low-profile pistol sight set purpose-built for the Sig Sauer P320. It pairs HiViz LitePipe fiber optic technology with tritium inserts to deliver true 24-hour illumination, giving you a fast, intuitive sight picture in daylight, low light, and total darkness.

A red fiber optic front gathers ambient light for a bright daytime dot, while the green tritium rear glows on its own once the ambient light fades. The result is a unique single-dot sight system that keeps your focus downrange and target acquisition quick across any lighting condition.

Constructed from steel and finished in black, the FastDot H3 is built to handle everyday carry and hard use. Its slim, low-profile footprint lets the set ride under most standard holsters without modification, making it a natural upgrade for EDC P320 pistols where a snag-free sight is preferred.

This model fits the Sig Sauer P320 in 9mm, .45 ACP, and 10mm Auto on fixed-sight, non-optic-ready configurations. It installs as a direct replacement for the factory sights and gives your P320 a major upgrade in visibility and target acquisition speed.