Abstract: A firearm choke tube includes a cylindrical body, a choke interrupted thread section, and a locking tab. The choke interrupted thread section is positioned on an outer surface of the cylindrical body and configured to threadably engage an interrupted thread section of a barrel of a firearm to limit longitudinal movement of the cylindrical body relative to the barrel. The locking tab protrudes from the outer surface of the cylindrical body and is configured to interface with a detent formed in the barrel to limit rotational movement of the cylindrical body relative to the barrel.

Abstract: A folding knife includes a handle, a knife blade rotatably attached to the handle, the knife blade including a tang, a liner positioned within the handle, the liner further comprising a liner lock, and a safety device. The liner lock has a first position when the knife is in a closed position, and has a second position when the knife blade is in a deployed or open position. An end of the liner lock engages the tang of the knife. A safety device is positioned between the liner lock and the handle when the knife blade is in the deployed or open position.