Hey there Paul,

Yes, you can use a nail gun compressor for airbrushing, as long as you can crank the airpressure down to 15-20lbs, you should be alright.

You might need a couple of fittings to convert it to your airbrush hose, but otherwise it is good to go. Used one for years until I got tired of it scaring the crap out of me (and usually ruining a paint job or at the very least spilling paint) when it kicked on. They are loud!