Since you're back, figured I'd point out a few things.
There's more than one, there's the M16A3 and A4.
There's more than one scar, but this game uses the SCAR-H, smaller barrel, larger caliber scar.
And the sights on the M16 still need to be fixed-


AK ironsights are correct, but they need to be elevated a small bit.
Some of the pistols aren't aligned correctly, which kinda messes up sight viewing, meaning that if the barrel of the gun is flat, pointing forward, then the sights should be the same too. That way, it looks a bit better and the weapon doesn't comp
And maybe, just for a few guns, some rifles and whatnot, how about some ACOG and holographic sights.