Leupold 171359 BackCountry Cross-Slot Base Ruger American 20 MOA

The Leupold 171359 BackCountry Cross-Slot Base transforms the Ruger American rifle platform with precision-engineered 20 MOA cant for extended range shooting. This matte black aluminum base maximizes scope adjustment range while maintaining the low-profile aesthetics hunters and precision shooters demand.

What Makes This Different

Unlike standard zero-cant bases, this BackCountry base incorporates 20 MOA of built-in elevation to extend effective range capabilities. The cross-slot design accommodates both traditional rings and modern quick-detach systems. Leupold's precision machining ensures consistent scope alignment across temperature extremes and heavy recoil cycles.

Key Features

• 20 MOA cant extends long-range shooting capability by 200+ yards
• Cross-slot configuration accepts multiple ring and mount systems
• 6061-T6 aluminum construction with Type III hard anodizing
• Engineered specifically for Ruger American rifle receiver geometry
• Matte black finish eliminates glare and blends with rifle aesthetics
• Precision-machined mounting surfaces ensure repeatable zero retention
• Low-profile design maintains clean sight picture and rifle balance

Field performance demonstrates the base's ability to handle magnum cartridges and extreme weather conditions without shifting point of impact. The 20 MOA cant proves particularly valuable for long-range hunting scenarios where shots extend beyond 400 yards, competitive precision rifle applications, and tactical shooting disciplines requiring maximum scope adjustment range.

Technical Specs

• Material: 6061-T6 aluminum alloy construction
• Finish: Type III hard anodized matte black
• Cant: 20 MOA built-in elevation
• Compatibility: Ruger American rifle receivers
• Mounting: Cross-slot design for versatile ring options
• Weight: Approximately 2.1 ounces
• Country of Origin: United States
• Warranty: Leupold Golden Ring Limited Lifetime Warranty

This base represents the intersection of Leupold's optical expertise and precision manufacturing standards. The combination of extended range capability and rock-solid reliability makes it the logical choice for serious long-range applications where scope adjustment limitations cannot compromise shot placement.