Can anyone make one of these models

I’m new guy here so this is a small request of me.Could anyone can make model and skin for Desert Tactical SRS,this one is a beauty with the same length of M4 rifle and powerful of AWP.This gun use .338 LapuaMagnum caliber and 308 WIN .This one can be good in CSS or GarryMod may be
some pics:

Beside i found this skin:
I really love it but the link didn’t work with me,can you please reupload it on megaupload or rapidshare for me