Need help with upgrades

So I am trying to upgrade a couple of my weapons past level 10 and I have my talent and enough of the potion, or whatever it is, but I don't know what to so about the little canon box on the left? Any help??

 

You need a duplicate item of the same rarity.

 

So if I have a common nortor or epic cannon or whatever then I need another one as well? Confused

 

If you have one, you need a second (of the same item) from loot to upgrade the level 10 to the next tier which is also level 11.

And when you reach 20 you need yet another duplictae to start 21~30. They do not require the spare to be upgraded at all, it just needs to exist.

 

yep

 

You must have one mor same kind and rarity for example, you have a level 10 uncommon sniper cannon. You need 1 more any level of uncommon sniper cannon. (Note: to get it you can't buy it at the shop. But you must use your luck. Just wait until you get it) good luck bro! Hope this is useful

 

I have my min leveled to 10
I have another mine of the same type (Rare)
Just need my to research t2 and I can evolve.
It's that simple! hope this helps

 

Lucky you! My rare standard shield is level 10 and i need to evolve it. Just need 1 more rare standard shield. It is hard to get that rare standard shield T_T

 

It is hard just keep at it though! You'll get it soon I'm sure!

 

Lol wtf, you have 10k rare parts but no uncommon pieces? It's the opposite for me haha

 

XD