Look into Master airbrushes here. They also carry all other brands, but the Masters are basically knock offs of Iwata's. I own a few of these too. The threading isn't compatible, but you'll see by the pic's that they have striking resemblances. Their warranty is virtually unbeatable too. Although they advertise returns, most times if you've had a problem...they'll just send you out a new one. I've had some pistol grip attachments for my Iwata's which I gave to a buddy, I just don't like them. They're handy if your, again doing bases and coatings...but for feathering, fine lines, and proper brush stokes....more work than it's worth to me. But....I'm looking at if from a detail stand point. You may not have the intent to get that detailed, so a pistol grip my be fine.