Nightingale

 is a Tier 5 Tank that upgrades from Basher and Silencer at level 60.

Design
The looks very similar to the Basher, but its rear decorative barrel tapers outward at the back. The main barrel is completely unchanged and the decorative barrel does not get any longer.

Technical
The tank seems to have the same stats as Basher, but with the added ability to become invisible upon staying still.