Leupold BackCountry Cross-Slot Base — Marlin 336

Leupold’s BackCountry Cross-Slot base for the Marlin 336 is a lightweight, one-piece mounting solution machined from 7075-T6 aluminum. It provides a matte black, low-profile platform designed for direct installation to the receiver and accepts a variety of ring types. The Cross-Slot style offers secure, repeatable attachment for optics while minimizing added mass. This base is built for field use where durability and weight savings are priorities.

Key Specifications

• Compatible with Marlin 336 receivers for direct mounting.
• Constructed from 7075-T6 aluminum for strength-to-weight performance.
• Finished in Matte Black for reduced glare and a subdued appearance.
• The overall length measures 5.90 inches for a compact footprint.
• Designed as a one-piece base for consistent alignment and rigidity.
• Mount type installs to receiver for direct scope support.
• It accepts Picatinny- and Weaver-style rings for broad compatibility.
• No rings included; rings or ring-mounted optics must be sourced separately.
• Features a Cross-Slot style for secure ring attachment.

Engineered to balance durability and minimal weight, the BackCountry Cross-Slot base is suited to hunters and practical shooters who want a stout, low-profile platform for mounting optics on a Marlin 336. Its aircraft-grade aluminum construction and compatibility with common ring systems make it a straightforward choice for building a reliable, lightweight optics setup.