done both core and hardcore, but to be honest most guns are fine on hardcore if your accurate with the first shots, but most HC players are sprayers

for core acr with focus/silencer hardcore acr with impact/silencer or tube

mp7 range/silencer

mk46 impact/grip (or red dot)

for core striker range/extended mags and hardcore spas12 with range/grip

core msr with extended mag hardcore rsass with impact/silencer

AK silenced all day.

i love using msr drag-scoping with quickdraw, soh, and sitrep. really need sitrep pro because if you get flanked ur screwed

LMAO.... the acr with silencer... WTF... it's CRAP

ACR, silencer, extended mags is the most effective gun in the game when it comes to long range battles as well as CQC.

The Scar - L is a close Second.