The revolutionary, patent-pending Drivelock design in collaboration with Icon Defense, uses three independent wedges that interface with the angular grooves in our proprietary barrel nut. This system clamps the rail onto the steel barrel nut with extreme force and precision, while also driving the handguard rearward towards the upper receiver. The slightly larger ID of that extrusion gives us more real estate around the gas block, even more rigidity than the M76, and takes longer to heat.

M89 Drive Lock Rail

Lengths Available: 8″- 13.1oz;     9.5″ – 14.4oz;      10.5″ -14.6oz;      11.5″ – 15.6oz;      13″ – 16.6oz;     13.75″ – 17.2oz;      15″ – 18.1oz;      16.75″ – 19.4oz

ID: 1.4″

Finish: Mil-Spec MIL-A-8625F, Type III, Class 2, Hard Anodized Coating, Non-Reflective, NiAc Seal (Anodized to match SOLGW receivers)

T-Marks: Engraved T-Marks

What’s included: Rail, Barrel Nut, Barrel Nut Wrench, & Lock-Up Components

Installed Weights (with MLOK 4140 QD socket installed):