I bought this guy knowing he was pretty much a chunk of plastic with arms and legs that moved. I took him out to the shop and performed cruel and unusual acts upon his tiny, lifeless form. I cut off the head, cut the wedge of plastic below the upper jaw and under the chin, cut a thin slice of plastic from the top of the wedge, and glued it back in place to essentially close up the mouth. I trimmed the sides of the neck (the back of the neck was pretty flat due to the fact that the neck is sculpted with the wires sitting tightly on the sides of his neck ) so that the head could rotate. I dremeled a hole in the upper body where the neck would be and inserted a plastic rod into the hole. I dremeled a hole in the head, added a ring of plastic to the neck to replace the space taken out by the mouth wedge, and put the pieces together. The result is a head that has a closed mouth and a swivel neck.
I cut off the two pistons on his waist and cut him in two at the place where the spine meets the thorax. I again dremeled a hole in both sides to connect them with a plastic rod. I also dremeled holes in the bottom of the thorax and in the tops of the hips to attach the new pistons. I used the rubber O-ring from a GI Joe figure for the pistons. They aren’t silver like the rest of the figure, but it works for me.
I cut the arms near the wrists and took out a small chunk of each one to reduce the insane length of the arms. I used this opportunity to turn the left hand to better support a rifle. I also added swivel joints in the ankles to give him better stances.
He turned out pretty much ok for me. He's not articulated like my new Microman figure, but he does just fine for my purposes. It was an easy fix for a few small issues with the figure.