Quick question,

Can anyone help me with something, On the RS site, they refer on countless occassions to figure being made with the removeable head style that Kenner preferred to use, might sound daft but what does this mean, I've never tried to pull one of the heads off, and to be fair wouldn't really want to.
A few years ago I bought an old collection off a friend, most of which where in poor condition. Among them a very poor condition Boba Fett, given its worthless state, I decided to crack it open and have a look inside, after reading somewhere that the main rocket firing case was still present inside. Either way that head was not removeable, also in the collection was a DS Commander which simply didn't have a head, but it was snapped off and I imagine the same style as the Fett, I know the early figure where made slightly differently, just wondered really. Any thought?