Truglo Fat Bead Universal Replacement Sight 3-56 Thread Size, Red
- Type:
- Sights - Front
- Firearm Group:
- Shotgun
- Firearm Make Fit:
- Krieghoff
- Firearm Fit:
- Shotgun
- Front Color:
- Red/Fiber Optic
- Rear Color:
- N/A
- Rear Material:
- N/A
- Base Configuration:
- 20515
- Fiber Diameter:
- 0.100"
- Frame Material:
- CNC Machined Steel
- Front Material:
- Fiber Optic
The Truglo Fat Bead Universal Replacement Sight with 3-56 thread size is a precision red fiber-optic front sight bead built for shooters who want a drop-in upgrade or repair solution. Whether you're replacing a worn original bead or upgrading an existing front sight assembly, this universal design works across multiple firearm platforms thanks to its standard 3-56 thread mounting. The oversized fiber diameter makes it easier to pick up in the field and at the range, giving you faster target acquisition in varied light conditions.
CNC-machining ensures consistent bead geometry and durability—this isn't stamped or cast, it's precision-built to handle the wear of regular shooting. The red fiber-optic material delivers high visibility whether you're hunting upland birds, shooting clay targets, or working defensive drills. The universal model ships with multiple mounting screw sizes, so you can dial in the fit on your specific gun without hunting for the right fastener.
Field-tested across shotguns, rifles, and leveractions, the Fat Bead is a straightforward, no-fuss upgrade that works with rails, dovetails, and existing front sight systems using the 3-56 thread standard. If your current bead has dulled, cracked, or you just want a brighter sight picture, this is a solid choice for hunters and shooters who value simplicity and proven performance.
Key Features
- Red fiber-optic bead for high-visibility targeting
- Universal 3-56 thread compatibility across multiple firearms
- CNC-machined for precise, durable construction
- Oversized fiber diameter for faster target acquisition
- Includes multiple mounting screws for adaptable fit
Specifications
| Brand | Truglo |
| Product Type | Replacement Front Sight Bead |
| Thread Size | 3-56 |
| Fiber Color | Red |
| Fiber Diameter | 0.100 inch |
| Fiber Length | 0.5 inch |
| Design | Universal (includes multiple mounting screws) |
| Construction | CNC-machined |
Frequently Asked Questions
What guns does the Truglo Fat Bead 3-56 thread work with?
The universal model is designed for any firearm with a 3-56 thread standard on the front sight assembly. This includes many shotguns, rifles, and lever-actions across multiple manufacturers. Verify your gun's thread size before ordering to ensure compatibility.
Is this a direct replacement for my existing bead?
If your current front sight uses a 3-56 thread and a similar mounting system, yes. The universal kit includes multiple screw sizes to adapt to different sight bases, but always confirm your current setup matches the 3-56 specification.
What's included in the package?
You receive the Truglo Fat Bead replacement sight in red fiber-optic, plus multiple mounting screws to fit various sight configurations and thread standards.
How bright is the red fiber in low light?
Red fiber-optic sights gather and transmit ambient light. Brightness depends on available light conditions; in very dim environments, the bead will be less vivid than in full daylight or overcast conditions. Many shooters find red ideal for upland and clay shooting.

