Cons: 1) Misaligned Texture on the gun itself. Common when porting, its easy to fix. 2) Arms- I don't even know why you tried to overlay the CSS arms texture onto the CSGO Arms. Yes, I know rigging the CSS arms onto the CSGO rig is a lot of work, but what you have done is undoubtedly worse than what it would have looked like if you just let the texture stay as is. Props to effort though. 3) "Chrome"- Since chrome is in the title, you would expect the gun to look like chrome. but it appears that you just used the exponent map of the default tec9, and did not even edit the vmt shader parameters, so it looks like its made out of stone.
Pros: The sounds. that is pretty much it.
Other: The animations feel... weird. I dunno. Something's off about them.