Reasons not to use a shotgun during a zombie invasion

[Christmas]

Sticking together is important.

However The Guide frowns upon the use of Heavy Machine guns dude to inaccuracy during long periods of automatic firing. They're also a big ammo eater. More accurate kills can be accomplished with half the ammunition and even less noise and accuracy. You cannot silence an M249, You can however, silence an M4A1

I like to be less "OOO M4A1 HURRR" because apparently that is the best gun ever or something?

The SAW would not be for stealthy zombie submission. It would be necessary if you are barricaded in a house and have a serious number of zombies on you. Sometimes silence is not the top priority.

Also, with spraying and praying, yes the SAW will be inaccurate. But it supplies a very high amount of ammo before reloading, and can be effective with short bursts.

Keep it on Semi-auto rather than Fully automatic, only click that bitch to "Rock n' Roll" if you absolutely need to output high amounts of fire. I suppose you could just burst fire methods with Machine Guns to maximize accuracy and cut down on ammunition. They're heavy fuckers too... wouldn't wanna lug that thing around PLUS the ammo box.

Considering that is the heaviest piece of equipment I listed, it shouldn't be a problem. Sometimes you need heavy equipment.

I'm cool with a Thompson, however they do make a rattling sound when you shake them, could be a problem for Night operations and stealth maneuvers.
The rattling has something to do with the action of the gun, not sure what.
You would also be carrying ammo for a separate weapon, say a Colt M1911 ?

Yeah a Tommy is not stealthy, but being an Italian I have to be stereotypical like that.

And if we want to talk about fictional firearms, I'll take the SMG and Pistol used by Will Smith in I-Robot. Why? They don't need to be reloaded. Ever.