I gave my Buster Optimus Prime metal pipes and some extra paint detail work back when I first got him, but now he has new hands too! The hands were made by Ariel AKA Fakebuster83 and can be found in the Shapeways online store. I must say these hands were pretty tough to put together. Lots of small parts and such a tight fit that I had to sand many things down to get them assembled. This is the case with many Shapeways sets though, and was well worth it to have highly articulated hands that transform into the death knuckles that Optimus killed Shockwave with in DOTM! I did have to sand down the handle on the buster cannon slightly for it to fit in the new hands.