The CMMG Zeroed Picatinny End Cap (CMMG part no. 22CA6E8) caps a compatible receiver extension with a short section of Picatinny rail, giving shooters a rear mounting point for a monopod, cheek riser accessory, or other rail-mounted gear that a standard end plate doesn’t provide. CMMG designed the Zeroed cap to fit its own line of AR-pattern pistols and rifles that use the corresponding receiver extension pattern, so it installs as a direct swap without machining. Adding usable rail space at the very rear of a build is especially useful on precision and DMR-style configurations where a monopod can steady a supported shooting position. This end cap is a simple accessory upgrade for compatible CMMG builds.

Key Specifications

• Adds a section of Picatinny rail to the rear of a compatible receiver extension.
• Built to fit CMMG’s Zeroed receiver extension pattern.
• Installs as a direct-fit end cap, without machining.
• Installs without machining onto a compatible CMMG receiver extension.
• Sold as a single accessory, not bundled with a monopod.

Frequently Asked Questions

What accessories can I mount to this rail section? It accepts standard Picatinny-mount accessories, commonly monopods or cheek riser hardware.

Does this fit any AR15 receiver extension? It’s built specifically for CMMG’s Zeroed receiver extension pattern; confirm compatibility with your specific build before ordering.

Buy the CMMG Zeroed Picatinny End Cap

Shop the CMMG Picatinny end cap in our AR dust cover selection, with fast, insured shipping from our Lubbock, Texas gun shop.