Okay, there are these weapons I found on garrysmod, and they go with this gamemode called greenshift.
The server is up, IP is-217.211.68.78:27800
It's basically a battlefield/Brink/other games this guy played mixed together.
30 customizable weapons with selectable types of ammo, along with the ability to do some parkour.
There's a download for the gamemode too, and the weapons are pretty neat as well.
I'm on the server now, hope some of you guys will come by.
Download this stuff to speed up download for server, and possibly host your own.(and to see textures)
Green Shift ContentThe actual GamemodeYou can find the Customiziable weaponry on Garrysmod.org, it's not that hard, but it's not needed for the game.