jimmiroquai on the WW2 Airsoft forum reports Zeta-Lab videos of the replacement gas charge bolt for their Mosin Nagant, running at sub-500fps.
[vsw id=”R4rZHArqY4Q” source=”youtube” width=”600″ height=”400″ autoplay=”no”] [vsw id=”tPhEHgUgrA4″ source=”youtube” width=”600″ height=”400″ autoplay=”no”]