XS Sights Big Dot Tritium Front Night Sight for Mossberg Shotguns with Plain Barrel Bead

Mossberg shotgun owners relying on their scattergun for home defense or tactical work need sights that perform when it matters most. The XS Sights Big Dot Tritium Front Night Sight for Mossberg shotguns with plain barrel bead delivers exactly that: a large, easy-to-acquire front sight powered by tritium that stays visible from bright daylight through complete darkness. The oversized "Big Dot" design solves a real problem many shooters face—poor sight visibility under stress or with aging eyes—and the tritium charge means you're not dependent on ambient light to see your target.

The XS Big Dot front sight uses a proprietary photoluminescent Glow Dot that absorbs available light and glows in low-light conditions. The convex design of the dot increases surface area, which means more light absorption and a brighter charge—a thoughtful engineering choice that translates to better visibility when seconds count. The tritium vial itself provides continuous illumination independent of any ambient light source, ensuring your front sight is visible in true darkness. You get to choose your front sight color: orange for maximum daytime contrast, yellow for superior low-light glow, or white for a reflective option that works well across both conditions.

Built from CNC-machined steel, this sight is as durable as your Mossberg. XS backs the tritium with a 12-year warranty, which reflects the quality and reliability expected in a defensive sight. Whether you're setting up a reliable home-defense shotgun or upgrading an existing plain-bead barrel, the Big Dot tritium front sight gives you a fast, intuitive aiming reference in any lighting condition.

Key Features

• Tritium-powered front sight for low-light and night visibility
• Proprietary photoluminescent Glow Dot absorbs ambient light and glows in darkness
• Convex dot design increases light absorption and intensifies glow
• Multiple color options: orange (daylight visibility), yellow (low-light glow), or white (reflective all-purpose)
• Oversized Big Dot design for quick target acquisition and aging-eye friendly
• Durable CNC-machined steel construction
• 12-year warranty on tritium vial
• Designed for Mossberg shotguns with plain barrel bead

Specifications

Frequently Asked Questions

What color should I choose for my XS Big Dot front sight?

Orange delivers the best high-contrast visibility in daylight and bright conditions. Yellow glows brightest in low light and darkness. White is reflective and performs well across both daylight and low-light environments, making it a versatile all-purpose choice if you're undecided.

Will this sight work on my Mossberg shotgun with a plain barrel bead?

Yes. This XS Sights Big Dot front sight is specifically designed for Mossberg shotguns with plain barrel beads. It replaces the existing bead and mounts directly on your barrel.

How long does the tritium stay bright?

XS Sights warranties the tritium vial for 12 years. Tritium is a self-illuminating isotope that glows continuously without relying on external light sources, making it ideal for defensive use in darkness or low-light conditions.

Can I use this sight in complete darkness?

Yes. The tritium vial glows independently of ambient light, so your front sight remains visible in total darkness. The photoluminescent Glow Dot provides additional illumination in low-light conditions when there is some ambient light available.