If I bought an M1 kit could I micro upgrade it and if so, could I turn the turret, hull etc. into M2
Yes, once you purchase kit you can start micro-upgrading it, when you fully micro-upgrade an item, you will be able to get the next modification for free, if you have the required rank for that modification.
More info about Micro-Upgrades you can find here.
thank very much for your reply, it has helped me make my decision. thx
Customer support service by UserEcho