Well that's another mark against this fairly lackluster gimmick IMO. I've certainly grown...some appreciation for certain aspects of it, or certain weapons in particular, but I'm still lukewarm at best to mechtech, generally taking a negative view of it as a whole. But alot of my issues I could forgive (save deluxe class weapons not locking and the fact that the figures are smaller because of the weapons) because it did have some cool potential in their playability and being able to trade around weaponry. ..but that's kinda ruined when some weapons just do not work with certain figures. Watching Optibotimus' review of Thundercracker, you can't just use Roadbuster's weapon to give Thundercracker two of the chainsaw gun, it just does not fit. I tried sticking Crankcase's gun onto Roadbuster's arm, just to see how it looked, it doesn't fit at all, you can't get it to even sorta peg in, even if you depress the panel for it all the way in. And I hate how some figures have the little panels or whatever that cover up the hole...but others don't, it seems kinda..odd that they don't all have them.