Leupold Backcountry one piece cross-slot scope bases are made from high quality 7075-T6 aluminum and they feature a hard coat anodized matte black finish. Each mount is compatible with either Weaver or Picatinny style rings. Each base is painstakingly designed by the Leupold engineers to fit a very specific set of receiver types. Please see below for the fitment guidelines.
 

Leupold One Piece Backcountry Cross Slot Scope Base (Black) Specifications and Features:

• Leupold 180952
• Backcountry Cross Slot Scope Base
• 20 MOA Elevation Bias Built In
• One Piece Design
• 7075-T6 Aluminum
• Hard Coat Anodized Finish
• Matte Black

Fits:

• Remington 700 Long Action ADL