An integral hand guard and accessory rail has an elongated shell with a shell wall adapted to be spaced-apart from and circumscribing a barrel of a firearm. The shell has a portion adapted to be griped by a user and defining a hand guard. The shell wall has another portion protruding radially away from the barrel defining an elongated rail, the rail having a cross-sectional shape orthogonal to the axis with a narrower neck a wider head coupled to the shell by the neck.