Hey folks, a couple of months ago a friend of mine who works at a replica company asked me to touch up these replica pulse-rifles from the Alien movies. I'm pretty good with this type of thing, but inexperienced. They have a few scratches and dings, and I'm not quite sure of the best way to go about it. I went to Lowe's and they were able to sell me some color-matched paint, but I'm a little apprehensive about the application of it. The paint is applied to what looks like resin, and I've never worked with that. Should I sand the area around where I'm to paint? Should I use any kind of primer? What type of brush will give me a smooth surface that matches the rest of the piece? Any pointers you can provide would be greatly appreciated. Here's some photos of what I'm working with:


