Geissele Automatics MK4 10" Super Modular Rail M-LOK Handguard
The Geissele MK4 10" Super Modular Rail is a 6061-T6 aluminum handguard with a Type 3 hardcoat anodized finish, built around a rigid, vented profile for heat dissipation while keeping weight down.
It features M-LOK slots along the sides and bottom with a continuous M1913 Picatinny top rail. Picatinny rail sections are installed/present on the handguard in the photos (including a longer 6 o’clock section and additional shorter sections near the front). Barrel nut is included.