Leupold Mark 4 Monolithic Long Range Picatinny-Style Base with 8-40 Screws

Leupold Mark 4 One-Piece Long Range Picatinny-Style Base with 8-40 Screws

Leupold Mark 4 One-Piece Long Range Picatinny-Style Base with 8-40 Screws is a Leupold mounting system designed to stably connect optics and compatible platforms. The one-piece configuration and Picatinny/cross-slot interface allow for quick identification of the intended installation type.

Choosing the correct base depends on the weapon model, action length, hole spacing and threading, and the type of rings used. The geometry maintains system alignment without introducing undeclared inclinations.

Key Features

• Series / System: Mark 4
• Configuration: One-piece
• Mounting interface: Picatinny / cross-slot
• Finish: Matte black
• Recommended hardware: 8-40 thread screws
• Declared compatibility: Mark 4 One-Piece Long Range Picatinny-Style Base with 8-40 Screws

Product Identification

• Manufacturer Part Number / MPN: 59250

Before mounting, compare the weapon's model, generation, and action length with the indicated compatibility. Also check screw threading, hole spacing, and ring type; installation must be performed on an unloaded weapon, observing the torque specifications prescribed by the manufacturer.