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
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.
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1. A gas block assembly for a firearm, comprising: a gas cylinder defining a pressure chamber that is capable of being fluidly coupled to the bore of a barrel of the firearm through a gas inlet port, the gas cylinder being capable of receiving a gas pressure generated in the barrel of the firearm; a
1. A gas block assembly for a firearm, comprising: a gas cylinder defining a pressure chamber that is capable of being fluidly coupled to the bore of a barrel of the firearm through a gas inlet port, the gas cylinder being capable of receiving a gas pressure generated in the barrel of the firearm; anda gas pressure relief port fluidly coupled to the gas cylinder and to the bore of the barrel of the firearm, the gas pressure relief port venting gas pressure in the gas cylinder into the bore of the barrel of the firearm when the gas pressure in the gas cylinder is greater than or equal to a predetermined gas pressure. 2. The gas block assembly according to claim 1, further comprising a pressure relief mechanism fluidly coupled between the gas cylinder and the gas pressure relief port, the pressure relief mechanism capable of venting gas pressure from the gas cylinder to the gas pressure relief port when the gas pressure in the gas cylinder is greater than or equal to the predetermined gas pressure, the pressure relief mechanism comprising: a pressure member fluidly coupled to the gas cylinder capable of being moved when the gas pressure in the gas cylinder is greater than or equal to the predetermined gas pressure; anda pressure adjustment member coupled to the pressure member, the pressure adjustment member capable of adjusting a force that is applied to the pressure member to oppose the pressure in the gas cylinder to selectably set the force to be substantially equal to the predetermined gas pressure that moves the pressure member. 3. The gas block assembly according to claim 2, wherein the pressure member comprises: a piston member comprising a surface fluidly coupled to the gas cylinder; anda spring member mechanically coupled to the piston member, the spring member capable of generating a the force that is applied to the piston member to oppose the pressure in the gas cylinder, andwherein the pressure adjustment member comprises an adjustable screw member. 4. The gas block assembly according to claim 3, wherein the firearm comprises a semi-automatic firearm, a fully automatic firearm, or a combination thereof. 5. The gas block assembly according to claim 1, wherein the firearm comprises a semi-automatic firearm, a fully automatic firearm, or a combination thereof. 6. A gas block assembly for a firearm, comprising: a gas cylinder defining a pressure chamber that is capable of being fluidly coupled to the bore of a barrel of the firearm through a gas inlet port, the gas cylinder being capable of receiving a gas pressure generated in the barrel of the firearm; anda pressure relief mechanism fluidly coupled to the gas cylinder, the pressure relief mechanism capable of venting gas pressure from the gas cylinder when the gas pressure in the gas cylinder is greater than or equal to a predetermined gas pressure, the pressure relief mechanism comprising: a pressure member fluidly coupled to the gas cylinder capable of being moved when the gas pressure in the gas cylinder is greater than or equal to the predetermined gas pressure; anda pressure adjustment member coupled to the pressure member, the pressure adjustment member capable of adjusting a force that is applied to the pressure member to oppose the pressure in the gas cylinder to selectably set the force to be substantially equal to the predetermined gas pressure that moves the pressure member. 7. The gas block assembly according to claim 6, further comprising a gas pressure relief port fluidly coupled between the pressure relief mechanism and an atmosphere that is exterior to the gas cylinder, and wherein the pressure relief mechanism vents pressure from the gas cylinder to the gas pressure relief port when the gas pressure in the gas cylinder is greater than or equal to the predetermined gas pressure. 8. The gas block assembly according to claim 7, wherein the pressure member comprises: a piston member comprising a surface fluidly coupled to the gas cylinder; anda spring member mechanically coupled to the piston member, the spring member capable of generating a the force that is applied to the piston member to oppose the pressure in the gas cylinder, andwherein the pressure adjustment member comprises an adjustable screw member. 9. The gas block assembly according to claim 8, wherein the block assembly is used remotely from, or adjacent to, or integrally with the mechanical loading and ejection components of the firearm. 10. The gas block assembly according to claim 8, wherein the firearm comprises a semi-automatic firearm, a fully automatic firearm, or a combination thereof. 11. The gas block assembly according to claim 10, wherein the block assembly is used remotely from, or adjacent to, or integrally with the mechanical loading and ejection components of the firearm. 12. The gas block assembly according to claim 8, wherein the pressure relief mechanism vents gas pressure from the gas cylinder to a sound suppressor or to a port that is capable of being fluidly coupled to a sound suppressor. 13. The gas block assembly according to claim 6, further comprising a gas pressure relief port fluidly coupled between the pressure relief mechanism and the bore of the barrel of the firearm, wherein the pressure relief mechanism venting pressure from the gas cylinder to the gas pressure relief port when the gas pressure in the gas cylinder is greater than or equal to the predetermined gas pressure. 14. The gas block assembly according to claim 13, wherein the firearm comprises a semi-automatic firearm, a fully automatic firearm, or a combination thereof. 15. The gas block assembly according to claim 6, wherein the firearm comprises a semi-automatic firearm, a fully automatic firearm, or a combination thereof. 16. The gas block assembly according to claim 15, wherein the block assembly is used remotely from, or adjacent to, or integrally with the mechanical loading and ejection components of the firearm. 17. The gas block assembly according to claim 16, wherein the pressure relief mechanism vents gas pressure from the gas cylinder to a sound suppressor or to a port that is capable of being fluidly coupled to a sound suppressor. 18. The gas block assembly according to claim 15, wherein the pressure relief mechanism vents gas pressure from the gas cylinder to a sound suppressor or to a port that is capable of being fluidly coupled to a sound suppressor. 19. The gas block assembly according to claim 6, wherein the pressure relief mechanism vents gas pressure from the gas cylinder to a sound suppressor or to a port that is capable of being fluidly coupled to a sound suppressor. 20. A gas block assembly for a firearm, comprising: a gas cylinder defining a pressure chamber that is capable of being fluidly coupled to the bore of a barrel of the firearm through a gas inlet port, the gas cylinder being capable of receiving a gas pressure generated in the barrel of the firearm; anda gas pressure relief port fluidly coupled to the gas cylinder and to the bore of the barrel of the firearm or to a sound suppressor, or a combination thereof, the gas pressure relief port venting gas pressure in the gas cylinder into the bore of the barrel or the sound suppressor, or a combination thereof, of the firearm when the gas pressure in the gas cylinder is greater than or equal to a predetermined gas pressure.
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