I have a seriously difficult time holding my airbrush, I have large paws, arthritis and what have you to the extent that sometimes I'm trying to control the thing with my thumb! I've been looking at these pistol grip jobs, I know Iwata do one but that's too many pennies, the Sparmax one though is appealing. From my understanding you regulate the amount of paint with the rear screw adjuster and the air will be at maximum once the trigger has travelled far enough to deliver paint. I will only be doing small jobs, mainly full coats and stencilling but I'd welcome anyone's views on these machines. Thanks.