Leupold Mark 4 1-Piece Browning A-Bolt SA 20 MOA Matte

The Leupold Mark 4 1-piece scope base is a purpose-built mounting solution for Browning A-Bolt SA actions, offering built-in elevation for extended-range optics. Constructed to the same standards as Leupold optics accessories, this base provides a secure foundation for precision setups and long-range sighting. Its 20 MOA incline and adaptable 8-40 screw system help optimize optic elevation without extra shims or risers.

Key Specifications

• The manufacturer is Leupold.
• The product family is Mark 4.
• The base is a 1-piece design for consistent alignment.
• Designed for Browning A-Bolt SA actions.
• Provides 20 MOA of built-in elevation for long-range optic geometry.
• The mount is 8-40 adaptable and can accommodate a modified 6-48 shoulder screw for additional flexibility.
• Constructed from steel for durability under repeated use.
• Finished in matte black to reduce glare.
• The 8-40 screw system is stated to increase mount strength by 41 percent.

This one-piece Mark 4 base simplifies optic installation while providing secure, repeatable mounting and added elevation for long-range work. Its steel construction, adaptable screw pattern and factory 20 MOA incline make it a practical choice for shooters preparing a Browning A-Bolt SA for precision optics and extended-range use.