Screwgun

 is a Tier 5 Tank that upgrades from Nailgun, Rimfire, Hotshot, Scorpion and Plow at level 60.

Design
The looks very similar to the Nailgun but all of its barrels are slightly wider. Its base also widens slightly to accommodate for this.

Technical
The is essentially a Pounder-Nailgun. It shoots stronger bullets at a slightly slower rate than the Nailgun.