Here's a recently finished gun, a slightly modified toy. I removed the small stock so it looks more like a hand held, and changed the clunky looking plastic cocking mechanism for a brass ring. The gun was de-seamed where necessary then primed with acrylic spray paint then sprayed with acrylic matt black then hand painted with acrylic paints. Finally it was given two coats of matt lacquer for protection. I used a Huntsman Boomstick as the starting point, they're available on Amazon as well as other stores.