Great model, skin and sound, great work.... my only comments...
- The loadout for the v1.75 US Sniper (not sure about the v1.46) has him carrying an M21 Mag which is completely useless and comes up looking ugly on the loadout screen.
- Would it at all be possible to have it not fire tracers. I know that FliPeR's M4's do not have a tracer bug, but then again I do not know much at all about addon making, so if it cannot be fixed, that is fine.
Anyway, nice job.