I REALLY want to like this mod, and don't get me wrong, it's the BEST weapons mod i've ever seen. However there is one problem. On the M4s and M16, the barrel-cooler gets slightly larger as it approaches the stock. Not much, but it is noticeable. Just add it in and I'll quit complaining. Other than that, GREAT WORK DUDE! I wish I could use 3DSM that well... But then again I used a crappy rip from Kazaa and it's screwed up. Actually I still need to go to Wal-Mart and shell out $45 for the GR complete collection so I can play multiplayer (yes, I've been operating a rip for the past 2 years).