Board Thread:Unanswered Questions/@comment-184.1.6.171-20151230231725/@comment-25370154-20151231111100

As Blk said, the MSTM is a Special Weapon, and as such it requires specific parts.

The description is very misleading: they work "like standard missiles", meaning that they can lock-on to both air and ground targets. And that's all about similarities.