Dexter,
Getting a gun into fpsc can be a problem doing it by hand but it is possible. The gun that you see on the ground and the gun you hold are 2 differant .x files. The one you see being held can be a pain in the butt to get positioned correctly. Code masters making a program that dose this with a really simple gui. All you'd do is direct it to the models and textures and muzzel flash/shells and you can position it in the prog. It also writes the guncore specs and places all the files where they have to go
This prog is also going to cost 15$ but really thats nothing for the time thats in this prog. You can look at this programs screen shots on
http://wc.out-lawz.com
He had a thread either on this page or the next page telling people he'd help them with weapon problems as he had time, so bar me looking for it myself look for Codes last post or two. I hadn't gotten to the place in my game where I needed to import weapons and I ended up beta testing for Code so now theres no way on earth I'd ever do it by hand after using "Weapon Creator". But he may be able to help ya for free in that thread.