From what I've noticed so far there are more versions of deactivation than just old spec and new spec in EU. There are the dry firing ones with full working parts (not allowed in some countries), then there are the ones which have various or most parts working, but not dry firing (some Sterlings have some parts working/moving, some have others, some have all working, but none dry fire), and there are the ones which are completely blocked and welded.
There are also the US versions which are cut in a pretty ugly manner...