The Midwest Industries MK2 RMR Mount Co-witness gives you a rock-solid foundation for your red dot optic on the AR platform. Built from the ground up for shooters who run co-witness height sights alongside their reflex or red dot, this mount delivers the precision and durability you need when your optic is your primary aiming system. Midwest engineered the MK2 series with production shooters and duty-focused riflemen in mind—no flash, just solid American manufacturing and performance that lasts.

This co-witness configuration positions your RMR at the height that lets your iron sights stay in the game as a backup. The mount itself is machined from hard coat anodized 6061 aluminum and held together with 4140 heat-treated steel clamps, so you're not worrying about your zero walking or your optic shifting in a fight. Torx hardware is built into the clamps for clean assembly and tool-free future adjustments, and Midwest includes their proprietary optic mount tool to make installation and dial-in straightforward.

Made in the USA and backed by a lifetime warranty, this mount is designed to return to zero reliably and stay there. If you're running irons behind a red dot and want a mount that matches your commitment to redundancy, the MK2 Co-witness delivers.

Key Features

• Co-witness height positions your RMR for backup iron sight use
• 6061 aluminum construction with hard coat anodize for corrosion resistance
• 4140 heat-treated steel clamps for strength under recoil
• Integrated Torx hardware for secure, repeatable assembly
• Precision machining for optimal return-to-zero and repeatability
• Includes Midwest Industries Optic Mount Tool for installation and adjustment
• Made in the USA with lifetime warranty coverage

Specifications

Frequently Asked Questions

Will this mount work with my backup iron sights?

Yes. The co-witness configuration positions the RMR at a height that lets you use standard AR backup sights in front of and behind the optic for redundancy.

What optics does the MK2 RMR mount accept?

This mount is engineered for RMR-pattern optics. Midwest also produces MK2 mounts in other patterns—Acro, T2, and micro dot clones—if you need a different footprint.

Is installation difficult?

No. The mount comes with the Midwest Industries Optic Mount Tool and uses integrated Torx hardware for straightforward setup. The tool helps you dial in your optic's alignment and secure it for zero.

What comes in the box?

The mount, integrated Torx hardware, and the Midwest Industries Optic Mount Tool for installation and adjustment.