A handguard system for use on a rifle having a barrel attached to a receiver by a barrel nut, including an adapter ring and a tubular handguard. The floor tiles may include a locking system that allows adjacent tiles to interlock, while also permitting a predetermined amount of lateral sliding relative to one another. The external interface may also be coupled so as to pass data between the network interface device and higher levels in a network protocol stack. The method damping may take a number of forms, such as, but not limited to, solid media damping, fluid damping with or without an orifice, a hydraulic or magnetic circuit, coulomb damping, etc. The circuit is preferably utilized with a device for shot tracking.