Williams Gun Sight Wgos Base .730-.830'' Bbl Diameter Black .290''

The Williams Gun Sight WGOS base is a no-gunsmith open sight mounting solution for rifles with barrel diameters between .730" and .830". If you're running a classic rifle setup or upgrading to Williams' adjustable sight system without modifying your barrel, this base installs cleanly and gets you on target fast. It's built from high-tensile rustproof alloy—the material Williams has trusted for generations of hunters, sportsmen, and shooters.

What sets this base apart is its thoughtful engineering: the windage and elevation adjustments use a dovetailed system with hardened gib locks, so once you dial in your settings, they stay put. A single screw loosens to let you make corrections in the field. Because no barrel dovetailing is required, installation is straightforward and reversible. That's practical versatility for a hunter who moves between rifles or wants to keep barrel integrity intact.

At .290" height, this base works with Williams' blade and sight assembly systems (sold separately) to create a low-profile open sight rig. It's finished in black and sized for the specific barrel diameter range noted—verify your barrel diameter before ordering to ensure a proper fit.

Key Features

• Fits .730" to .830" barrel diameter—no gunsmithing required
• High-tensile rustproof alloy construction for durability in field conditions
• Dovetailed windage and elevation adjustments with hardened gib locks hold zero
• Single-screw loosening for quick field adjustments
• No barrel dovetailing necessary—preserves barrel integrity

Specifications

Frequently Asked Questions

What barrel diameters does this base fit?

The WGOS base is sized for rifle barrels with a diameter between .730" and .830". Measure your barrel diameter at the muzzle or breech to confirm compatibility before ordering.

Do I need to have my barrel gunsmithed to install this base?

No. This base mounts without dovetailing the barrel, so professional gunsmithing is not required for installation.

What sight blade and system components do I need?

The base itself is the mounting platform. Williams sight blades and adjustable sight assemblies are sold separately—check compatibility with your specific rifle model and sight series.

How do I adjust windage and elevation?

Loosen the single adjustment screw to unlock the base, then use the dovetailed windage and elevation mechanisms to dial your sight. The hardened gib locks keep adjustments locked in place once set.