You are interested about making a wooden Tommy Gun, but if you want to make a replica, here's my tip: First, to be more accurate; surf the internet for some info about the gun's measurements. Make some plans so you have a guide as you continue with the project. Use cardboard patterns for the stock and grip. For the complex parts, use automotive putty. It cures fast. You can sand, carve, drill and mold it. You can use plastic from scrap to build the trigger and sights. Use flat white enamel as primer as you paint the wood. Sand to smoothen the rough and uneven parts after applying putty. Spray paint the "metal" parts with metallic or flat black. Dry brush the parts that usually fade with silver to make it look more realistic. Use light brown for the stock and grips. Top with a darker shade as you imitate the wood grain.