importing foreign weapons (m16 rifle and desert eagle) into user-made maps?

[Duke Rocks]

hey, everyone, what i'm trying to do is put realistic weapons (specifically the ones mentioned in the topic name) into my ut 2004 map.

I have already found a great m16 weapon from a mod, and i was wondering if it would be possible to make it so I could use it in the level i made.

if not, does anyone know where i can find good weapon models/weapon packs for download that can be used in the game? like i said, i'm looking for realistic real world weapons such as the desert eagle and m16 assault rifle

any help would be great,

thanks