i just found an interesting bug,
figured i'd post it...
im not sure if anyone noticed it yet as it's not easy to spot
anyway it involves minigun firing without the initial delay
so what you do is take a flamethrower and minigun as your weapons
and while constantly presing the fire key down switch betwen the two weapons
and the minigun should shoot with no delay
not very usefull but still..

Well actually this works with any weapon, just hold the fire button when you switch from the weapon, and also hold it when switching back.
Then the delay should be "saved" and you can continue from where you stopped.