Not nearly enough ammo for this to be functional. Tried it, does not work in combat. Maybe if you can get your friend to pilot an urbanmech moving behind you holding all your ammo.
Let's make this thing viable . . . MOAR AMMOOO!!! 10 tons, enough to actually make it worth while. Obviously low on armor, but so long as you force them to you, they should die so fast, it won't matter!
Just testing. The 2 UAC20s that u cant fire without insta-overheat worth all this equipt in weight: EDIT: [member=3228]Solahma[/member] comment (the post below) made me think it twice. I think this should be runneable. 4 cERMLas are a nice backup and the ammo is 9 tons, so 3 tons/gun, enough to involve in long fights:
Tried 4 with a macro that will cycle through them all in a chain fire, then double tap them before the cooldown finishes. Works alright. It's still very hot, but at least you can put out Max DPS. The ammo runs dry very fast as well.