This Full Top Rail model means that the Picatinny top runs from beginning to end. This gives tons of room for any accessories you may want to mount on top. 14" Full Top Rail MLOK Handguard (Includes Barrel Nut & Hardware). Handguard is made of 6061-T6 aluminum and anodized black per mil-spec MIL-A-8625F, TYPE III, CLASS 2. The barrel nut is 4140 PH steel. Full top rail + MLOK slots on 7 other sides. Includes anti-rotation tabs. Hand guard weighs 7.0 ounces. Barrel nut and hardware weigh an additional 2.6 ounces.
Installation:
- Use standard castle nut wrench & torque wrench. We recommend Real Avid's castle nut tool along with a torque wrench.
- Torque barrel nut to 40-55 lbs. This is typically done 2-3 times, e.g. torque to 40-55lbs, then loosen, then torque again to 40-55lbs, then loosen, then torque to 40-55lbs one final time.
- Hand tighten barrel nut/handguard screws using 1/8" hex drive. Then torque screws to 30-35 inch/lbs
