The Model 21M is a heavy duty, pneumatically operated gun for spraying all conventional coatings. It features a drop-forged, brass plated body and adjustable stainless steel fluid needle. It has an adjustable spray pattern control at the side of the gun head and offers a replaceable gasket fluid nozzle seal. The Model 21M can be remotely controlled with the three-way valve. Requiring only 35 PSI to trigger, it can cycle up to 250 times per minute.