You can just set the Ammo to -1 or 0 to get the unlimited clips effect. :/
There were significant changes to most of the weapons that I did not like.
These changes actually changed the overall function of the weapons from a classic feel to more of a....
....bulky, cheap feel?, I can't really say, but it isn't what it used to be.
http://dl.dropbox.com/u/22217440/Tier.zipI used the internet wayback machine to collect the last three files, still gotta do it for the explosives.
Much thanks to corporation for that first pack, the mediafire link did not appear to work.