Here are some links to clips of the game folks sampling the sounds of alot of different weapons for the game. pretty neat stuff. The last two are for fun. http://www.youtube.com/watch?v=RM8NWFjkmU4
http://www.youtube.com/watch?v=XYJ36MIdPO4
http://www.youtube.com/watch?v=9-4IFUak_U0