Maybe it was the one I had, the right hand was loose and kept falling out, the armor didn't sit right on the thighs, but most of all was it's possibility, everytime I tried to pose the arms pointing out with the gun, the arms would fall back down to the body, very loose joints. To me, if you can't pose it the way you want, it kinda defeats the purpose of all the articulation.
So take Cody with the holo of Palpatine holding up in his palm and imagine the arm just falling down, the holo would fall off or whatever.