GAS piston
This is a more modern system in the form of a pre-pressurised piston instead of a spring. Airguns with this system have a constant power (no spring damping), lower noise and smoother recoil.
This is a more modern system in the form of a pre-pressurised piston instead of a spring. Airguns with this system have a constant power (no spring damping), lower noise and smoother recoil.
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