The Geissele Automatics Mk4 13.5'' M-LOK Super Modular Rail in DDC is a premium upgrade for your AR-15. Designed with precision and durability in mind this 13.5-inch rail is made from high-quality aluminum ensuring a lightweight yet robust addition to your firearm. The M-LOK style provides versatile mounting options for accessories enhancing your rifle's functionality. Finished in a distinctive DDC color this modular rail not only improves performance but also adds a unique aesthetic appeal to your AR-15 setup.