I can't speak for that particular stock but I can speak well (I think) for the material used to manufacture it. But your biggest challenge is how you do it: Prep-work is one of the key steps. First, it's not all exactly nylon, there are probably more glass fibers in that plastic blend than you realize (gives it more durability and strength). So sanding it in steps as if it is wood is key, although you will want to use either "De-natured" alcohol or rubbing alcohol with a 91% content or better to wipe everything down after to make sure that all releasing agents and oils are mitigated. After painting (allow at least a few days for off-gassing) you will want to seal it with something. If you do not, the paint job will not last. If you want a glossy finish, then a regular polyurethane will work. If you want a protective layer without excessive gloss, a matte polyurethane finish (or satin) is the way to go. The nice thing about matte/satin is that if it doesn't work out as glossy as you want (after a few days of off-gassing) you can always wet-sand it and polish it to something glossier if you wish. Any questions, just ask. I've refinished everything from high-end guitars to decks to cars etc.