From my experience so far in popping the arms of "action feature plagued" figures is that the "joint" for the arms is obviously not a normal peg, but it is still the general shape of a peg and with a little cutting and sanding you can get a nice arm to work with. Case in point the left arm for Kit Fitso, I used his arms to make a better Mace Windu, but the left arm was so screwy, the "peg" for the action feature was soooo huge, so I had to do a lot cutting and sanding just to get a good general shape, but once I did get the shape I was looking for, it looked nice and smooth against the Mace torso. I agree with JJ, if you got an extra $2 head on over to KB and grab a Kit and just take him apart and experiment with him, you could get some nice results.