Leupold BackCountry Cross-Slot Base 20 MOA Nosler M21 Matte Black

The Leupold BackCountry Cross-Slot Base delivers precision mounting for Nosler M21 rifles with an integrated 20 MOA cant for extended long-range performance. This machined aluminum base provides the rock-solid foundation required for consistent shot placement at distances where standard flat bases fall short.

What Makes This Different

Unlike standard zero-cant bases, this BackCountry base incorporates a 20 MOA downward slope that effectively extends usable scope adjustment range by 20 minutes of angle. The cross-slot design accepts both Weaver and Picatinny rings, eliminating compatibility concerns while maintaining precise alignment. Machined from aircraft-grade aluminum with Type III hard-coat anodizing, it withstands recoil forces that can loosen inferior mounting systems.

Key Features

• 20 MOA integrated cant extends long-range capability without scope adjustment limits
• Cross-slot design accepts both Weaver-style and Picatinny mounting rings
• Machined from 6061-T6 aluminum for strength-to-weight optimization
• Type III hard-coat anodized matte black finish resists corrosion and glare
• Precision-machined mounting surfaces ensure consistent scope alignment
• Factory-specific fit for Nosler M21 receiver geometry
• Includes all necessary mounting hardware and thread-locking compound

Field performance centers on the base's ability to maintain zero under repeated heavy recoil cycles. The 20 MOA cant proves particularly valuable for long-range hunting applications where shots beyond 400 yards require significant elevation adjustments. Competition shooters benefit from the additional scope travel for engaging targets at varying distances without holdover calculations. The cross-slot versatility accommodates different ring heights and scope tube diameters without requiring base replacement.

Technical Specs

• Material: 6061-T6 aircraft aluminum construction
• Finish: Type III hard-coat anodized matte black
• Cant: 20 MOA downward slope
• Compatibility: Nosler M21 rifle receivers
• Ring compatibility: Weaver and Picatinny cross-slot design
• Mounting: Factory-drilled and tapped receiver holes
• Hardware: Includes mounting screws and thread-locking compound
• Manufacturer: Leupold & Stevens, USA

This base represents the logical choice for shooters who demand maximum scope adjustment range without compromising mounting integrity. The factory-specific machining ensures proper fit on Nosler M21 receivers, while the 20 MOA cant unlocks the full potential of long-range optics.