The Midwest Industries MK2 30mm RMR Cap is a precision-made mount designed to securely accommodate 30mm optics in conjunction with the Trijicon RMR, delivering clean alignment and repeatable returns for dependable performance in the field or the range. Built in black, this 30mm mount cap integrates seamlessly with existing setups, offering a robust platform that preserves rail integrity while providing a stable surface for reliable zero retention during high-demand shooting scenarios. The MK2 receiver extension concept combines proven Midwest Industries engineering with a streamlined profile, enabling quick, repeatable attachment and favorable optical sight alignment without adding unnecessary bulk. Ideal for competitive shooters, tactical operators, and serious hobbyists, the component is crafted to withstand rigorous use, resist torque, and maintain true plane alignment across varied conditions. By leveraging the precise tolerances and durable construction, users can expect consistent cheek weld, improved sight picture stability, and smoother transition between shots, ultimately contributing to enhanced accuracy and confidence. With the MK2 30mm RMR Cap, Midwest Industries delivers a purpose-built solution that preserves a clean, uncluttered rail while expanding the versatility of your Trijicon RMR-equipped platform for a wide range of shooting applications.