The Yankee Hill Specter Length Lightweight Forearm utilize our anti-rotation screws to insure that the forearm stays solid even under strenuous use. Perfect for use with forward grips and optics. The forearm features mounting points for our Swiveling Sling Studs (YHM-9469), Mil. Spec. Picatinny rails, and they accept our Forearm End Caps. The barrel nut and forearm tube are made of aircraft quality aluminum and hardcoat anodized to Mil. Specs. The jam nut is made from steel and plated a matte black to match. All the assemblies include One jam nut, one barrel nut, 2 anti-rotation screws, and one forearm tube. Overall length is 9.675 inches and weight is 12.9 oz.