Adjust Power On The Fly With SAT Variable Velocity Device ( HD) Redwolf Airsoft

SATs cunning little invention, the VVD or Variable Velocity Device; it installs like a normal piston in your gearbox and then you can adjust 3 levels of power from outside the weapon using only a tool that slides down the barrel requiring no disassembly at all. The tool is polished smooth so it will NOT damage your inner barrel, unless you are extremely rough with it. Product Link: