B23R dualied or B23R +ls+lb with scavenger+dexterity. Even dualied i can kill medium range to just short of long range.
AN-94 with stock and QuickDraw.
Wow, quite a bit of variance in everyone's preference. This has to be the first COD in a while where there would be this many different answers.
It shows that 3arc at least got something right in that there is no MW3 ACR or MP7 that just outclassed everything. The guns that came close to being 'OP' or dominant, however you look at it, were nerfed, and rightly so. I like how much variety there is, though the M27 seems to rule HC due to it's non existent recoil and long range accuracy.
MP7 Extended Clip Quickdraw.
Scar-H with stock and fast mag.
Remington870. "any maps a shotgun map" You may think im crazy, but if i was limited to one weapn i would use a shotgun. I am easily better with them than any other gun, no matter the map. Its all about knowing your limits.
Either Peacekeeper, M8, SMR or M27.
Without a doubt the KAP 40 with extended mag and barrel,perks lightweight, toughness, dexterity and engineer with a black hat, accurate at length and super quick, always place at the top of the rankings with this, when not trying hard MK 48 because of distance, with FMJ, fore grip and target finder.