Designed and built to fit most Mil-Spec AR15/M4 upper receivers. Boasting one of the easiest mounting systems to install in the industry, these M-LOK® slim-line handguards provide superior fit, finish and performance. Works with low-profile gas blocks. Seven rows of mounting surface. Streamlined 1913 picatinny top rail-Type III hard coat anodized.

Outer Dimensions:
Length: 34.29cm
Width: 4.4cm
Height: 5.55cm

Inner Dimensions:
Width: 3.4cm
Height: 4.3cm

Torque Specs:-Barrel Nut: 35-80 Ft./Lbs.-Mounting Bolts: Do Not Exceed2.9 Ft./Lbs. (35 In./Lbs.)