The Leupold BackCountry 1-Piece Cross-Slot Base for the Browning AB3 long action (part no. 174684) gives a long-action bolt rifle a rigid, weight-conscious mounting foundation. Leupold machines the one-piece base from 7075-T6 aluminum and cuts a cross-slot rail that accepts both Picatinny- and Weaver-style rings, so ring placement can be tuned for the right eye relief. The 0 MOA elevation suits standard hunting zeros, and rings are sold separately to match your optic. For Browning AB3 long-action owners, this scope base is the fitted, lightweight choice.

Key Specifications

• The base is machined from 7075-T6 aluminum, giving a high strength-to-weight ratio for durable, light mounting.
• The design is a one-piece, cross-slot layout, providing rigidity and flexible ring placement.
• The base measures 6.30 inches, giving ample rail length for ring spacing and eye relief adjustment.
• The mount fits long-action bolt-action receivers, matching that receiver’s spacing.
• The cross-slot footprint accepts Picatinny- and Weaver-style rings, keeping ring choice open.
• The base is cut to 0 MOA, keeping the rail parallel to the bore for a direct zero.
• The finish is matte black, reducing glare and matching common rifle finishes.
• Rings are not included, so pair with rings matched to your optic and preferred height.

Frequently Asked Questions

Does this fit the short-action AB3? No, it is machined for the long-action receiver spacing specifically.

What rings do I need to complete the mount? Any Picatinny- or Weaver-style rings sized to your scope tube and desired height will work with the cross-slot rail.

Buy the Leupold BackCountry Base for Browning AB3 Long Action

Long-action rifles built for the field need a base that pulls its weight without adding to it, and this BackCountry mount does exactly that. Order it from our Lubbock, Texas gun shop and it ships fast.