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 BackCountry 1-Piece Cross-Slot Scope Base Specifications and Features:

• Manufacturers Number 180951
• Weaver/Picatinny Compatible
• One Piece Base
• 7075-T6 Aluminum
• Hard Coat Anodized
• Aluminum
• Matte Black

Fits:
Remington 700 Long Action