GSI Creos Mr. Hobby Procon Boy PS-290 airbrushMr. Hobby GSI Creos Mr. Airbrush Procon Boy LWA Double Action Pistol Trigger Type 0. 5mm PS 290 Airbrush The GSI Creos Mr. Airbrush Procon Boy LWA PS 290 is a double action pistol trigger, gravity feed airbrush made in Japan (formerly Gunze). With a 0. 5mm nozzle, its an excellent choice for primers, top coats, and everyday painting, especially when you need smooth coverage and steady output on larger surfaces. Built for control and comfort, the PS