The piston shaft is made of full CNC aluminum and is centered in the cylinder with two glide rings. The steel base increases longevity over long periods of use. The seal cap fits the cylinder diameter perfectly and has been tested for sealing in high as well as low temperatures. It is also AirBrake pin ready for all the tech heads out there. This piston is a spare part for the SSG10 A1, A2, and A3. Not compatible with the SSG-24.
