Firearm Upgrades Help

[Sniper07LHS]

I havn't seen any post about firearm upgrades soooo I was just wondering if there are upgrades for every weapon?? If so then could there be a guide or something of there location.

[Danteveli]

check my thread and there is link for weapons location. they are new weapons that replace old guns.

[TankCommando]

Here's a link in case your as lazy as I am. :p

http://www.xbox360achievements.org/forum/showpost.php?p=1786488&postcount=2