Nailgun

The Nailgun is the tier 4 tank that can upgrade at level 45.

Design
The Nailgun has a circlar body, with 3 small bullet on a trapezoidal base.

Technical
The Nailgun fires bullet which is weak, small but fast with incredibly fast rate.

Upgrades
The Minigun can upgrade from the, the , the and the  at level 45. It can upgrade to following at level 60.