Big Bang Cannon

The  is a Testbed Misc tank.

Design
The tank has a barrel that is wider than Destroyer's but thinner than Annihilator's, and is noticeably longer than either of them. It tapers outwards very subtly like a Machine Gun barrel, but much less. On the back it has a strange structure consisting of two trapezoids, with the smaller one layered over the bigger one.

Technical
The fires a rapidly-growing bullet akin to a Shrapnel explosion.