The HiViz FastDot H3 sight set for SIG P320 is a low-profile single-dot system that combines fiber optic and tritium for 24-hour illumination (HiViz part no. SG320FD21). The front sight is red and the rear is green. HiViz made it for the P320 in 9mm with fixed sights, and it mounts like a traditional sight set. It is a way to get a bright, fast sight picture without batteries.

Key Specifications

• The set fits SIG P320 pistols in 9mm with fixed sights.
• It cannot be mounted with an optic attached, so it suits irons-only P320s.
• It does not fit the P365, M17 or M18, which is worth checking before you order.
• The sights are red at the front and green at the rear, using LitePipes that stand out against the target.
• It combines fiber optic and tritium for 24-hour illumination, so the sights read in daylight and in the dark.
• The tritium is fully encapsulated, sealed inside the sight, and the set is all steel.
• The set fits standard holsters and mounts like a traditional sight set.
• HiViz covers the tritium for 12 years from the date stamp against total loss of illumination caused by defects in workmanship or material.

Frequently Asked Questions

Does this fit a P320 with an optic? No. HiViz states the set fits the P320 in 9mm with fixed sights only and cannot be mounted with an optic attached.

Does it fit the P365, M17 or M18? No. HiViz states it does not fit the P365, M17 or M18.

Does it work in the dark? Yes. The set combines tritium with fiber optic for 24-hour illumination.

Buy the HiViz FastDot H3 Tritium/Fiber-Optic Sight Set for SIG P320 9mm

The P320 is one of the most common pistols to carry, and a brighter sight helps at any hour. Order the set from our Lubbock, Texas gun shop and see more gun sights with fast direct shipping.