The U.G.A. Anti-Air gun, named the "Shredder" for obvious reasons, has a design similar to the Hammerfist, with large amounts of armor plating in the front. It has a very high rate of fire, almost 20 bullets per second. Ammunition is fed through the side, by a long "belt". It is quite efficient in destroying aircraft, though a common weakness is that enemy infantry will occasionally hit the ammo feed, causing a rather unfortunate explosion.
There's also a panel to shield the gunner from discarded shells while he's shooting.
Movie style shot. Gotta love epic "Why am I standing next to this guy?" moments.
"Ouch. Sucks to be you."
[insert obvious comment here]
There's just one more to go. Expect it sometime Sunday.