The Ultradyne USA UD Arca Dynalock Rail measures 12.45 inches and features a black anodized finish. Constructed from 6061-T6 aluminum with a hardcoat anodized coating, this rail weighs 8.4 ounces, providing durable protection while remaining lightweight enough for practical field use. This versatile rail system seamlessly integrates both ARCA and Dynalock accessories, offering enhanced functionality and adaptability. Installation is straightforward, utilizing M-LOK fasteners provided or professional installation by a qualified gunsmith.
The rail’s standout feature is its ability to use the Orbit Ballhead with Dynalock, and all other ARCA Clamp accessories are also compatible. The M-LOK compatibility allows seamless integration with various accessories such as grips, lights, and bipods that utilize the M-LOK mounting system. Whether you’re building a precision rifle platform or upgrading an existing setup, the UD Arca Dynalock Rail delivers the mounting flexibility modern shooters demand.





