If you drill two holes, one in the broken off part and the other in the main part. Put a piece of wire in the space between the breaks, and cut the wire so it fits the way you want. Epoxy the wire to the both parts and use All-Game or any other 2-part sculpt and repair the damaged or missing piece. You can restore the color with Potassium Permanganate available from Jonas or Research Mannikins. Good luck