No. You can't upgrade an upgraded weapon. You can; however, go to the weapon box and get another normal weapon (doesn't matter if it's the same type of weapon) and upgrade that normal weapon. For example: you can upgrade a weapon, run out of ammo, go back to the weapon box, get the same weapon again but in normal form, and upgrade the new normal weapon. You can also pack a punch as many weapons as you want in a single game but you can only have two weapons at a time. SpiderBite from NextGenTactics pack a punched 15 different weapons in a single game.
But I Pack-a-Punched ALL the guns in one game. By the way, I got to round 67.
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It means you can upgrade your guns.
No it is you, mason. And the guns you are holding are the "mustang and sally" which is what you get when you pack a punch the M1911 on zombies.
Pres reload next to the film projector in the pack a punch room.
no
When you Pack-a-punch the Olympia in Call of Duty: Black Ops, It becomes "Hades". This gives the Olympia More power, more range, and incindiary/ Dragon's Breath rounds, along with the pack-a-punch camo.