Are certain armor pieces in kits never going to be unlockable on their own?

Noticing that the right shoulder pad of both Carter’s and Emile’s kits aren’t in the shoulder customization tabs on the Mark V. Are these seriously going to be locked behind this kit? Or even worse, are they going to eventually be in the shop for exorbitant prices? Hoping Heroes of Reach has a part 2, cause lots of armor is missing from Reach.