Answer
Apr 25, 2026 - 12:27 PM
“Double O-ring” means the piston head uses two rubber O-rings to create an airtight seal inside the cylinder. This design greatly reduces air loss, leading to higher efficiency and more consistent FPS (feet per second) in your airsoft gun. O-rings are circular rubber gaskets used to prevent air or fluid leaks. This feature is a key part of the rocket piston design.
