When using Brownells Acraglas it is easy to get it on your hands, etc. I use vinegar to remove it from my skin after a job. It will take off the unmixed components or the mixed epoxy.
After posting the above kink, someone correctly pointed out that vinegar, being mainly acetic acid and water, will cause rust and/or loss of bluing on gun metal. Thus, while vinegar still works for hands, aprons, clothing (used away from gun metal), if you are cleaning acraglas from gunmetal use TCE or lacquer thinner.