Meprolight FT Bullseye Tritium Fiber Optic Green Front Sight for Sig P365

The Meprolight FT Bullseye tritium fiber optic green front sight for Sig P365 is a compact, battery-free aiming solution purpose-built for shooters who demand fast target acquisition and reliable illumination across all lighting conditions. Unlike traditional pistol sights, the FT Bullseye uses a patented optical design that combines fiber-optic collection in daylight with self-illuminating tritium for low-light and night shooting—no batteries, switches, or ongoing maintenance required. It mounts directly to your P365's existing dovetail, eliminating the need for a dedicated front sight post and keeping your pistol slim enough to work with most standard holsters.

Whether you're training at the range, carrying for personal defense, or practicing in variable light, the FT Bullseye's bullseye reticle (an illuminated dot centered in a circle) provides an intuitive aiming reference that cuts through the visual clutter of defensive scenarios. The fiber-optic element gathers ambient light during the day for a bright, daylight-visible sight picture, while the tritium takes over in dim conditions—so you're never fumbling with batteries or waiting for your eyes to adjust. The design is genuinely compact, staying true to Meprolight's claim of being the smallest optical sight of its kind, which means zero bulk and zero holster compatibility headaches.

Installation is straightforward on standard Sig P365 dovetails with no gunsmithing needed. The tritium charge is rated for 12 years of nighttime reliability, so you can install it and trust it to perform when it matters. If you shoot a P365 and want a sight that works hard in poor light while staying out of the way in daylight carry, the FT Bullseye delivers both simplicity and capability.

Key Features

• Patented optical design combining fiber-optic and tritium illumination
• Compact, low-profile form factor—fits most existing holsters
• No batteries, switches, or maintenance required
• Self-illuminated bullseye reticle for intuitive fast target acquisition
• Fiber-optic brightens in daylight; tritium activates in low light
• 12-year tritium luminosity guarantee
• Mounts directly to Sig P365 dovetail without gunsmithing
• Eliminates the need for a traditional front sight post

Frequently Asked Questions

Will the FT Bullseye work with my Sig P365 holster?

Yes. The FT Bullseye's minimal profile is designed to fit most existing P365 holsters without modification, since it doesn't add the bulk of a traditional front sight.

How does the sight stay illuminated at night without batteries?

The sight uses self-illuminating tritium, a radioactive isotope sealed inside the sight that glows continuously without any battery or power source. In daylight, the fiber-optic element collects ambient light for brightness; at night or indoors, the tritium provides instant illumination.

How long will the tritium stay bright?

Meprolight guarantees nighttime illumination for 12 years from the date of manufacture.

Is installation difficult?

No. The FT Bullseye mounts on the Sig P365's existing front sight dovetail with simple installation. No gunsmithing or specialized tools are required.