GAS BLOCK AND GAS TUBE FERRULE SEAL FOR FIREARMS BARREL

摘要

A gas block mounted to a rifle barrel and having a gas conducting tube retained within a tube receptacle of the gas block. A ferrule seat is defined about the gas conducting tube receptacle and a sealing ferrule member surrounding the barrel is press fitted within the ferrule seat and is deformed during press fitting to form a gas seal between the gas conducting tube and the gas block within the gas tube receptacle.

主权项

1. A cartridge gas actuating mechanism for a firearm comprising:
a barrel defining a barrel bore and having a barrel port along the length thereof in communication with said barrel bore; a gas block member being mounted externally of said barrel and having a gas passage in communication with said barrel port; a gas tube receptacle being defined within said gas block member; a gas conducting tube having an internal gas passage and having an end portion thereof retained within said gas tube receptacle and establishing a gas block/gas tube interface; and a seal member establishing positive sealing within said gas tube receptacle and with said gas tube and with said gas block member at said gas block/gas tube interface and preventing leakage of cartridge gas from said gas block/gas tube interface upon firing of a cartridge.