Board Thread:Warhammer 40k General Discussion/@comment-172.97.120.12-20160619182557/@comment-8881468-20160620011335

well official rules forb id you to do that, however, that is (imo) merely for official competetition and tournaments.

Nobody can tell you how to change or adapt our miniatures. there is f.e. a space wolf player, who used warhammer fantasy beastmen heads for his miniatures ( space goats, you can look it up on google). I have seen land raiders covered in pink fur and whatnot.

people tend to customise with green stuff or switch parts  (grey knights termi helmets anyone^^).

if you just play with somebody else and said: yo, this miniature is part of my tactival squad, all the normal rules for a tctitcal marine apply, it is only for optics, then it should not be a problem.

however: I would nto go around and say: have a space marine army  and then say: battle sister miniature 1 is a standard tactical marine, while battle sister miniature 2 (which ooks alike) is a chaplain or ...xyz... keep it simple.