Calibre : 7.62mm NATO (M249 - 5.56mm Nato)
Clip Capacity : 100 (The same as M249)
Rate of Fire : 550 rpm (M249 - 600 rpm)
Weight : 8,61 kg (M249 - 6 kg)
So you see that this new machinegun is more powerful, than the old M249, `couse it has the same bullets as AK47, but it it has two drawbacks - it is heavyer (slower movement with this thing on) and it has lacks a bit of RoF.