Removable barrel and hand guard for modular rifles

摘要

A kit for use with a modular weapon having a barrel and having an upper receiver defining a gas port and a barrel opening. The kit comprises an upper receiver plate for attaching to the upper receiver, and a barrel plate. The weapon barrel passes though concentric openings in the upper receiver plate and the barrel plate and is secured in the opening within the barrel plate. Another opening in the barrel plate receives a primary gas tube such that a rearward segment of the primary gas tube extends rearwardly from that opening and a forward segment of the primary gas tube extends forwardly from that opening. A forward end of a gas tube extension couples to a rearward end of the primary gas tube and a rearward end of the gas tube extension is received within the gas port when the kit is in use with the modular rifle. An assembly removably attaches the upper receiver plate and the barrel plate thereby creating a gas flow path beginning at the gas port and comprising the gas tube extension, the rearward segment of the primary gas tube, and the forward segment of the primary gas tube.

主权项

1. A kit for use with a modular weapon having a barrel and having an upper receiver defining a gas port and a barrel opening, the kit comprising:
an upper receiver plate for attaching to the upper receiver; a barrel plate defining a first opening therethrough; the barrel for passing through second and third concentric openings defined in the respective upper receiver plate and the barrel plate, the barrel for connecting to the barrel opening; a primary gas tube; a gas tube extension; the first opening of the barrel plate for receiving the primary gas tube such that a rearward segment of the primary gas tube extends rearwardly from the first opening and a forward segment of the primary gas tube extends forwardly from the first opening; a forward end of the gas tube extension for coupling to a rearward end of the primary gas tube and a rearward end of the gas tube extension received within the gas port when the kit is in use with the modular rifle; an assembly for removably attaching the upper receiver plate and the barrel plate thereby creating a gas flow path beginning at the gas port and comprising the gas tube extension, the rearward segment of the primary gas tube, and the forward segment of the primary gas tube; and the second concentric opening in the upper receiver plate for receiving a threaded upper receiver extension of the upper receiver, and wherein the kit further comprises a threaded component for threadably engaging the threaded upper receiver extension for attaching the upper receiver plate to the upper receiver.