either the famas in call of duty black ops, the ump silenced without stopping power MW2. Those are the only EXTREME overpowered weapons i can think of, how bout u
Golden gun: James Bond Litany of Fury. WH40k: Dawn of War: Dark Crusade Alien Blaster, Fallout 3 Alien SMG, New Vegas (or that sun gun) Buffalo Rifle, RDR Famas, Black Ops Barrett .50 cal, MW2 MP40, WaW
note: these arree not the guns with the most power, but ones with more power than they really should
Yeah u can't call a CoD gun OP because often its underpowered. For instance, the AA-12 can shoot an entire map away in real life. For another, the P90 can shoot effectively over 30 yards away, not melee range. For another, the Intervention can shoot up to a mile and a half away.
Golden gun, since it only takes one shot. The Samurai is a great gun as well in the James Bond games. I think it only take one half-full charged hit to kill a person. Also, the magnum sniper rifle from Counter Strike on the Xbox. That took one shot as well to kill someone.