Item #:
030317034481
UPC: #:
030317034481
availability:
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Leupold BackCountry Cross-Slot Base Matte Black Nosler M21

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The Leupold 182847 BackCountry Cross-Slot Base delivers precision mounting for Nosler M21 rifles with zero-compromise reliability. This matte black base transforms standard hunting rifles into tactical-grade platforms capable of handling extreme conditions and heavy recoil.

What Makes This Different

Unlike standard Weaver-style bases, the BackCountry Cross-Slot system provides 20 MOA of built-in elevation adjustment for extended long-range shooting. The cross-slot design distributes recoil forces across a wider surface area, reducing stress on both the scope and rifle. This base maintains zero through thousands of rounds while providing the flexibility to adjust scope positioning without re-drilling.

Key Features

  • 20 MOA elevation built into base design for extended range capability
  • Cross-slot mounting system accommodates 1-inch and 30mm scope tubes
  • Aircraft-grade aluminum construction with Type III hard anodizing
  • Specifically machined for Nosler M21 action threading and bolt clearance
  • Matte black finish eliminates glare and resists corrosion
  • Four-screw mounting pattern ensures rock-solid attachment
  • Compatible with Leupold PRW2 and BackCountry ring systems
Field testing demonstrates this base maintains sub-MOA accuracy through temperature extremes from -40°F to 140°F. The cross-slot design allows shooters to position scopes for optimal eye relief without compromising structural integrity. Competition shooters and long-range hunters rely on this base for matches and hunts where first-shot accuracy determines success.

Technical Specs

  • Material: 6061-T6 aluminum alloy with Type III hard anodizing
  • Finish: Non-reflective matte black
  • Built-in elevation: 20 MOA
  • Mounting pattern: Four-screw design specific to Nosler M21
  • Ring compatibility: Leupold PRW2, BackCountry, and standard cross-slot rings
  • Weight: Approximately 3.2 ounces
  • Country of origin: USA
  • Warranty: Leupold lifetime guarantee
This base represents the intersection of precision engineering and field-proven reliability. Shooters demanding consistent performance across varying conditions choose Leupold BackCountry components for their ability to maintain zero when it matters most.