This will fix the animations for the Elites, 5-7, M3 shotgun, and AUG assault rifle that Valve was either too lazy to fix or never noticed.
Let me explain the fixes
Elites: I'm not really sure what the fix is for these ones, I never actually used it since I use a custom skin for the elites. If I had to guess, i'd assume that it stops that little silver thing in the original from popping out.
5-7: The slide(yes there is one on the 5-7) now moves back when the gun is fired, which looks great. If nothing else, you should at least download it for this.
M3 shotgun: The flashlight will now move backwards with the pump grip instead of staying forward.
AUG: The bridge between the handle and the gun on the cocking lever will no longer be invisible when pulled back for reloading.

Yeah I know, he put a lot of unnecessary anime s**t into the picture.