What is the purpose of rifle gas regulator?

The gas regulator can control the flow of gunpowder gas into the piston sleeve, and can play a role in troubleshooting when the mechanism in the gun is not working smoothly due to dirt. The gas regulator can also play a role when using bullets with different chamber pressures. The specifications of the bore pressure of the same bullet produced by different ammunition factories are different. The gas regulator is used to regulate the flow of gunpowder gas into the piston barrel to ensure the normal work of the rifle.