Work on the cooling barrel (needs to be longer) and stap some shoulderpiece arround the back ;D
Also decrease some width on the front end of the Silencer, IRL it would curse your aim.
And add some Iron Sightings to the top side of the gun instead of round edgez + mounting bracket.
You improved well my son.
Btw for transporting it into CS you'll need to have animations, lose fiddly things such as your ammoclips and so on and so on.
Not bad at all, although the grip seems to have been split along the middle and your butt seems to be missing entirely (twss). Also like Kuro said, the entire front end, foregrip and barrel, needs to be scaled along the x-axis. Ignore the silencer though, that looks fine except the thickness at the tip (twss).
I have to say though, this is your best work as far as lighting and shadows go. They shadows seem a little hard, but that can be easily remedied.
also the magazine in the picture you posted is VERY small it should be like double that IRL that mag would fit 9mm bullets
I agree with Kuro Tenshi, but it sure looks cool!