Minigun

Information
This gun is good at mowing down hordes of zombies or shredding brute-force zombies. It has 180 rounds and has 2 mags. With 55 damage firing at the rate of 0.05 seconds.

Of course powerful guns like these have a disadvantage. Slows you down by 4 walkspeed, needs 1.5s to rev up and you can't refill ammo.