Weaver 99491 Multi-Slot Extended Base Savage 10/11/12/14/16

The Weaver 99491 Multi-Slot Base transforms Savage short action rifles into precision platforms with extended mounting real estate and rock-solid optic stability. This black anodized aluminum base provides 20 MOA of built-in elevation adjustment while maintaining zero through thousands of rounds.

What Makes This Different

Unlike standard two-piece bases, this extended one-piece design spans the entire receiver length for maximum rigidity and eliminates flex between mounting points. The multi-slot configuration accepts both Weaver and Picatinny rings, offering versatility for various optic setups. Precision-machined from 6061-T6 aluminum, it maintains dimensional stability under temperature extremes and heavy recoil.

Key Features

• Extended one-piece design eliminates base-to-base flex and alignment issues
• 20 MOA built-in cant maximizes long-range elevation adjustment
• Multi-slot pattern accommodates both Weaver and Picatinny ring systems
• 6061-T6 aluminum construction with Type III hard anodizing for corrosion resistance
• Precision-machined mounting surfaces ensure repeatable zero return
• Low-profile design maintains proper scope height for comfortable cheek weld
• Includes all necessary mounting hardware and thread-locking compound

Field testing demonstrates this base maintains zero through extreme temperature cycling and heavy magnum recoil. The extended platform distributes stress evenly across the receiver, preventing the scope creep common with shorter bases. Hunters report consistent point-of-impact retention after transport in hard cases, while competitive shooters appreciate the additional adjustment range for extreme long-range applications.

Technical Specs

• Material: 6061-T6 aluminum with Type III hard anodizing
• Finish: Matte black anodized
• Built-in cant: 20 MOA
• Compatibility: Savage 10, 11, 12, 14, 16 short action rifles
• Ring compatibility: Weaver and Picatinny systems
• Weight: Approximately 4.2 ounces
• Length: Extended one-piece design
• Mounting: Direct bolt-on installation

This base represents the foundation for serious long-range shooting systems where precision and reliability cannot be compromised. The combination of structural integrity and built-in elevation adjustment makes it the logical choice for shooters demanding maximum performance from their Savage rifles.