Introducing The Revolution Internal Mix Air Purge Spray Gun Offering the Advantage of Internally mixing resin & catalyst without the constant concern of gelling the gun. Its lightweight and simple design is the ultimate in Polyester Spray Gun Development Features: Enviromentally Sealed Valve Components Single Operating Piston Air Purge Eliminates Solvent Waste Pneumatic Trigger Automatic Air Flush High Flow Passageways reduce Spray Pressure Self Adjusting Fluid Seals Low Emission, Non-atomized Spray Package Hardened Components Low Repair Costs Less Down Time Less Waste More Production Cutter Mounting Kit Available Accessor and Robotic Adapters Available