The Meprolight Fiber-Tritium Bullseye rear sight (part no. 631203108) is built for S&W M&P pistols. Like the rest of Meprolight’s Bullseye line, it aligns on a single central point of focus rather than a separate front-and-rear picture, giving it the feel of a red dot in a fully mechanical sight.

A fiber-optic element gathers ambient light for daytime use, while premium-grade tritium takes over after dark. The sight is drop- and shock-rated for heavy recoil, and its low-profile, snag-free design draws cleanly from a holster.

Key Specifications

• Green fiber-tritium Bullseye rear sight for a single point of focus, similar to a red dot’s feel.
• Fiber optic powers daylight visibility; tritium powers illumination at night.
• Fits S&W M&P pistols.
• Categorized by Meprolight as a dedicated Night Sights product.
• Drop- and shock-rated, built to hold up under heavy recoil.
• Ultralight, snag-free profile for a clean draw.
• Serves as an upgrade sight for compatible M&P-family pistols.
• Manufactured by Meprolight.
• Ships at approximately 0.21 lb.

Frequently Asked Questions

Is this the same sight as Meprolight’s Shield-specific Bullseye? No. Meprolight sells a separate Bullseye rear sight sized specifically for the M&P Shield, Shield Plus, and 2.0; this one is built for the standard M&P pistol.

Does this sight need batteries? No. It combines a fiber-optic element for daytime brightness with tritium for night illumination, and neither requires batteries.

What color is the illuminated dot? Green.

Buy the Meprolight Fiber-Tritium Bullseye Green Rear Sight – S&W M&P

Order it from Schaefer Defense, see more from Meprolight, or browse the full Gun Sights lineup for other options.