well if you want to put armored arms on him use the Heat and Pop trick.
For this you need a figure with the arms you want to put on him but don't use a very good quality figure or Rair figure use a figure that you can find any were, heat up the arms with a blow-drier for about 10/15 seconds or until you can pull the arms out of there sockets (with-out braking them.) . then do the same to the other figure , once you have done that heat up the arms again(don't forget the arm sockets on the figure you are putting the arms in.) and pop them back in. it dose work well but please be careful.
-Greg