Were you annoyed by the terrible sound of shooting in 6.0.2? Try this one - it's kind of like the old one except that it doesn't have so dull sound the gunshot itself uses the sound of M1 Garand while the reload is using shotgun reload sound. Try it out with a legendary cloak and get a machinegun :)
For the roughly accurate preview, check https://www.youtube.com/watch?v=ICQHGeMd3bc, you'll hear why instead of it's reload I've rather included shotgun reload :D
Installation: Manually unrar into your "World of Warcraft" directory (not in the World of Warcraft/Data).