Sons Of Liberty Gun Works 11" M89 Heavy Drive M-LOK Rail with Steel QD Sockets

The revolutionary, patent-pending Drivelock design—developed in collaboration with Icon Defense—uses three independent wedges that interface with angular grooves in a proprietary barrel nut. This system clamps the rail onto the steel barrel nut with extreme force and precision, while driving the handguard rearward toward the upper receiver for improved stability. The slightly larger internal diameter provides more clearance around the gas block, enhanced rigidity over the M76 model, and slower heat buildup. Lengths available include: 8″ (13.1 oz), 9.5″ (14.4 oz), 10.5″ (14.6 oz), 11.5″ (15.6 oz), 13″ (16.6 oz), 13.75″ (17.2 oz), 15″ (18.1 oz), and 16.75″ (19.4 oz). ID: 1.4″ Finish: Mil-Spec MIL-A-8625F, Type III, Class 2 Hard Anodized Coating with Non-Reflective NiAc Seal T-Marks: Engraved What’s included: Rail, Barrel Nut, Barrel Nut Wrench, Lock-Up Components