CMMG Zeroed Picatinny End Cap for AR-Style Buffer Tubes

Transform the rear of your AR-style buffer tube into a functional accessory mounting point with the CMMG Zeroed Picatinny End Cap. Precision-machined to CMMG’s exacting standards, this end cap replaces your standard stock end cap and adds a Picatinny-compatible rail section at the rear of your rifle or pistol build — giving you a clean, low-profile solution for mounting lights, slings, QD sockets, and other tactical accessories without added bulk or complexity.

Whether you’re completing a custom build, upgrading an existing platform, or simply looking for a smarter way to run rear-mounted accessories, the CMMG Zeroed Picatinny End Cap delivers reliable performance and a secure, durable fit. It’s a simple upgrade that expands your options without compromising the sleek lines of your setup.

Order online at Deep Roots Rifle Co for fast nationwide shipping, or visit our gun store in Eustis, Florida to pick one up in person. Our knowledgeable staff is always on hand to help you source the right parts and accessories for your next build.