What is gas-operation?

Q: What is gas-operation?


A: Gas-operation is a system of operation used to provide energy to operate autoloading firearms.

Q: How does gas operation work?


A: In gas operation, a portion of high-pressure gas from the cartridge being fired is used to power a mechanism that extracts the spent case and inserts a new cartridge into the chamber. Energy from the gas is harnessed through either a port in the barrel or a trap at the muzzle. This high-pressure gas impinges on a surface such as a piston head to provide motion for unlocking of the action, extraction of the spent case, ejection, cocking of the hammer or striker, chambering of a fresh cartridge, and locking of the action.

Q: Where does high pressure gas come from?


A: The high pressure gas comes from the cartridge being fired.

Q: How is energy from the gas harnessed?


A: Energy from the gas is harnessed through either a port in the barrel or a trap at the muzzle.

Q: What type of motion does this energy provide?


A: This energy provides motion for unlocking of the action, extraction of the spent case, ejection, cocking of hammer or striker, chambering of fresh cartridge and locking up action.

Q: Is there any other use for this system besides autoloading firearms?


A: Not that I am aware off.

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