Haven't seen a sugestion about this one yet, so I thought about making it myself.
How about an M134 Minigun in APB?
With the right ammount of tweaking it could very much be a ballanced weapon:
Damage: Medium-Low damage, not too different from a SHAW
Rate of Fire: Perhaps slightly higher than the Agrotech ACES (SMG version)
Movement Speed: Slow. Like very slow. Like can't sprint or jump with it. Much like the OSMAW
Ammo: Maybe 300-400 bullets per clip
Maybe also some additional features:
Wind-up/spin-up time before firing, or having the barrels rotate when the player is aiming the weapon
No reloading, after the 300-400 bullets have all been used, need to resupply
Slow resupply time, since it's a clip, you can't just grab magazines out of the box, maybe 20 bullets/second or so
Similar to Ram-Man animations, maybe with the player's back arched backwards, it -does- weigh 40Kg
Could even include different versions of it, with mods:
3 Barrels (Red): 50% faster spin-up time / 40% slower fire-rate
Single barrel (Red): 100% faster spin-up time / 80% slower fire-rate / 25% increased damage
Ammo Mag (blue): 200 backup ammo / 100(+/-) ammo per magazine
AP Rounds (Purple): 50% slower fire rate / 100% higher damage to vehicles
I think it would be a very cool weapon to use. Maybe for ambush situations or when you're escaping with the objective /on a vehicle (Face it, we've all done it at some point).
Joker box or armas, I think people would be interested still
Plus we already had one in the old convept video!
Nevermind you how long it took me to find.