Ruger 90329 Scope Base Adapter - 10/22 Weaver Mount Black Aluminum

The Ruger 90329 Scope Base Adapter transforms the standard tip-off grooves on Ruger 10/22 rifles and 22 Charger pistols into a versatile Weaver-style mounting platform. This precision-machined adapter eliminates the limitations of factory grooved receivers, providing a rock-solid foundation for modern optics and accessories.

What Makes This Different

Unlike basic scope rings that rely on spring tension in factory grooves, this aluminum adapter creates a true Weaver rail system with positive mechanical retention. The low-profile design maintains the sleek lines of the 10/22 while adding tactical versatility. Factory-direct engineering ensures perfect fitment without gunsmithing or permanent modifications to the receiver.

Key Features

• Converts tip-off grooves to standard Weaver/Picatinny mounting system
• 6061-T6 aluminum construction with Type III hard anodizing
• Direct replacement for factory grooved receiver - no drilling required
• Compatible with all Ruger 10/22 rifles and 22 Charger pistols
• Low-profile design maintains original sight picture
• Multiple mounting slots accommodate various optic positions
• Matte black finish resists corrosion and reduces glare

This adapter excels in applications where repeatability matters most. Competition shooters benefit from consistent optic mounting between matches, while hunters appreciate the ability to quickly swap between different magnification ranges. The solid aluminum construction handles the repetitive cycling of semi-automatic fire without loosening, maintaining zero through thousands of rounds. Weather-resistant anodizing protects against moisture and field conditions.

Technical Specs

• Material: 6061-T6 aluminum alloy
• Finish: Type III hard anodized, matte black
• Mounting: Weaver/Picatinny standard spacing
• Compatibility: Ruger 10/22 rifles, 22 Charger pistols
• Installation: Drop-in replacement for grooved receivers
• Weight: Approximately 1.2 ounces
• Country of Origin: United States

This factory-engineered solution provides the mounting versatility modern shooters demand while maintaining the reliability Ruger products are known for. The precision fit and durable construction make it an essential upgrade for any 10/22 platform destined for serious use.