Talk:12.7cm Twin Gun Mount/@comment-26495806-20170503153352/@comment-186.74.97.9-20170612142609

To upgrade this gun to B Kai, you need to upgrade this gun to max (after improvement level 6, it starts consuming 1 unlocked  12.7cm Twin Gun Mount per upgrade attempt). After reaching max level, you upgrade it one more time to obtain the B Kai version.

And no, you only need to have the required  12.7cm Twin Gun Mount  unlocked, the improvements doesn't matter. So, have unupgraded 12.7cm Twin Gun Mount  unlocked for improving (after star 6) or changing to B Kai (where it needs 2  12.7cm Twin Gun Mount   unlocked).