These free floating forearms feature a smooth design for a more comfortable grip and incorporate a full-length top rail. These forearms also feature solid machined 2.5" long rails at the muzzle end to allow the mounting of lights, lasers, and other accessories. They use our anti-rotation screws to ensure the forearm stays solid, even under severe use. Designed to accept the same rails for our customizable forearm system. Accepts both 3 and 4 inch rails.