Truglo Fat Bead 3mm Universal Replacement Sight - Green

The Truglo Fat Bead 3mm Universal Replacement Sight in green is a shotgun front sight upgrade designed for shooters who want faster target acquisition and improved visibility in variable light. This CNC-machined bead incorporates a fiber optic rod that gathers ambient light, making it easier to pick up your sight picture whether you're hunting in overcast conditions or at the range on a bright day. The universal metal construction fits most shotguns with a 3mm thread size, and Truglo includes different mounting screws to match your gun's setup.

Fiber optic shotgun sights have earned their reputation for a reason: they simply work. The green fiber absorbs and concentrates light, creating a bright aiming point without requiring batteries or electronic components. That reliability matters when you're in the field. The Fat Bead's larger diameter makes it more forgiving than traditional thin beads, especially useful for fast-moving game or competitive shooting where split-second sight acquisition counts. If your shotgun's original bead has dulled, loosened, or broken, a Truglo replacement brings your gun back to factory performance or better.

Installation is straightforward—the universal design and included screws handle most common 3mm bead threads, though you may want to verify your shotgun's thread size before ordering. Once mounted, you'll immediately notice the difference in low-light visibility compared to standard metal beads. Whether you're running a hunting gun, a clay target rig, or a home-defense shotgun, a quality front sight upgrade is one of the easiest ways to improve your shooting.

Key Features

• Fiber optic rod gathers light for high-visibility aiming in poor lighting conditions
• CNC-machined construction for durability and precision fit
• Larger diameter design for faster sight acquisition compared to thin beads
• Universal metal body fits most shotguns with 3mm thread size
• Includes multiple mounting screws to accommodate different gun designs
• No batteries or electronics required—purely passive light-gathering design

Specifications

Frequently Asked Questions

Will this fit my shotgun?

The Fat Bead 3mm is a universal design compatible with most shotguns that use a 3mm thread size for the front bead. We recommend confirming your shotgun's bead thread size before purchase, as some models use different thread diameters. Truglo includes multiple mounting screws to handle different gun designs within the 3mm standard.

What's the difference between this and a standard metal bead?

The fiber optic rod actively gathers and concentrates ambient light, creating a much brighter aiming point than a plain metal bead—especially in low-light hunting or overcast conditions. The larger diameter also makes the sight picture easier to see and faster to acquire during the swing on moving targets.

Does the green fiber optic need batteries?

No. The fiber optic design is purely passive; it gathers available light through the rod without any electronics or batteries. It works in daylight, shade, and low-light conditions based on the ambient light present.

What's included in the package?

You receive the Truglo Fat Bead 3mm sight with different size mounting screws to fit most common shotgun bead threads. Verify your shotgun's thread size and select the correct screw before installation.