An LMG or MG is a support weapon, it's meant to hammer an area, and not with pinpoint accuracy. Volume of fire is the goal.
You won't get that with 4 midcaps, and will be out of ammo asap.
The other issue is true suppression fire leads to malfunctions and failures in the mech box, which is why I've HPA'd my M249, thus allowing me to literally hold the trigger long enough to empty an entire box of ammo in one go without worrying about killing my gun or damaging it.
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Originally Posted by ThunderCactus
Like seriously dude. The incredible lack of common sense in the question could be scientifically investigated for evidence of a black hole.