Dulling down a gloss

I painted my rangefinder, looked at it 30 min. later and thought "why isn't it drying?", then I realized it was gloss black, not flat black. Is there anyway I can get rid of the shine without sanding it down and repainting?

Sure, get some testor's Dullcote and spray over it. That will knock down any shine it has.

AFettFullofDollars beat me to it, thats what I use and it works great!!!

you can also use a scotchbrite pad.