| 摘要 |
A gas block assembly for a firearm comprises a gas cylinder fluidly coupled to the bore of a barrel of the firearm through a gas inlet port, and an automatically adjusting gas pressure relief port. The gas cylinder receives a gas pressure generated in the barrel of the firearm, and the gas pressure relief port vents gas pressure in the gas cylinder directly or indirectly into the bore of the barrel of the firearm or attached sound suppressor if the gas pressure in the gas cylinder is greater than or equal to a predetermined and preset gas pressure. A pressure relief mechanism is fluidly coupled between the gas cylinder and the gas pressure relief port and vents gas pressure from the gas cylinder to the gas pressure relief port if the gas pressure in the gas cylinder is greater than or equal to the predetermined gas pressure. |
