Weaver 99477 Multi-Slot Base – Winchester XPR Short Action

The Weaver 99477 Multi-Slot Base is an extended one-piece mounting base designed specifically for the Winchester XPR short action. Machined from aircraft-grade 6061-T6 aluminum and finished with a Type III hard coat anodize, the base offers additional forward length to expand scope placement options. It accepts Picatinny or Weaver-style rings for flexible optic compatibility.

Key Specifications

• The application is compatible with Winchester XPR.
• The material is 6061-T6 aluminum.
• The finish is Black Matte Type III hard coat anodized.
• The mounting style is PICATINNY.
• The type of rings required is Weaver style.
• Rings included: No.
• The listed overall length is 10.3500.
• The listed width is 3.8000.
• The listed height is 0.9500.
• Sold as a 1-piece base.

This extended multi-slot base provides a straightforward, durable platform for mounting optics on compatible short-action rifles. Its anodized aluminum construction balances strength and weight while the extra forward length expands eye-relief and ring placement options for a wider range of scopes. Designed for shooters who value reliable, no-nonsense gear, the Weaver 99477 delivers a clean, low-profile mounting solution for Weaver- or Picatinny-style rings.