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All MCTs I've yet seen (except for some small Meades with ETX-style integrated backs) had easily accessible primary mirror collimation screws, the Rumak type designs of course also have secondaries that can be collimated.
Collimating a Mak is very straightforward, all you need is a steady night and a mag 1 (or so) star. This can turn out to be a big ask because for precise collimation you need a steady star image at well over 200x. An artificial star is an alternative for people who rarely get good seeing.
However, given that, collimating an MCT is a doddle.
Are you sure you don't have Ritchey–Chrétien or Dall-Kirkham scopes in mind?
Cheers
Steffen.
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