I have 4 of there molds, you need to put some worm oil, or softener on it every time you shoot them. Also they are a little dull if you don't.
You need to be careful when you get them out of the mold, they kling to it some, but not bad if you use the oil. They will have a little bit of plastic to pull of the ends of arms or other appendages usually, as they vent them pretty well.
Hope this helps.