Painting the Tupperware, composite, stocks is not a big deal. One must be sure to degrease well and not touch prior to painting. I always tape action and bbl. channel. Allow paint to fully dry. Krylon spray paint is very compatible to composite stocks. A good primer coat is essential. Then, if the one chooses, Rustoleum or Krylon are excellent choices. I prefer the textured paints for a good grip. Then, Montana Can Company black webbing paint over the well dried top coat. Would like to find an outlet for red webbing paint but have found nothing thus far. I suggest practice prior to painting. Good luck. I like to do my own work and enjoy the process. MTG