The Sons of Liberty Gun Works M89 11.5″ Drive Lock Rail Black is a testament to superior engineering and design, crafted from aircraft aluminum with a hard anodized black finish for durability. The revolutionary, patent-pending Drive Lock design uses three independent wedges that interface with angular grooves in the proprietary barrel nut, clamping the rail onto the steel barrel nut with extreme force and precision while driving the handguard rearward towards the upper receiver.
The M89 offers enhanced rigidity compared to earlier models, takes longer to heat up for consistent performance during use, and features a slightly larger interior diameter that provides more clearance around the gas block. The rail offers M-LOK compatibility for versatile accessory attachment. The 11.5″ model weighs 15.6oz and features a Mil-Spec MIL-A-8625F Type III Class 2 hard anodized coating with non-reflective NiAc seal.
The rail includes the barrel nut, barrel nut wrench, and lock-up components. Sons of Liberty Gun Works is renowned for innovation and quality in firearm accessories.






