It does not look like the Gol, It's closer to a M40A1.
Shading looks random and you should really check those shapes. The Gol's stock has a hole in the middle and the front handguard is not that thick.
Be pacient and you'll get a clear piece, post it on the WIP secion of the forum and I'm sure you'll learn much faster.
It's based of the Gol Sniper Rifle, I'll try fixing up the sniper when I have time, thanks for the critisizm. Much appreciated :).
The preview is much better than the actual piece. =(
The lighting on the gun doesn't make a great deal of sense with the transition from light to shadow being too harsh. The shape of the gun is also very awkward - is it based on an existing gun or is it meant to be alien like? The bend on the gun just below the scope could use some cleaning up of the line art. The preview is really lovely though.
Thanks for the advice Skyanaden. I think I'm going to soon sumit a fixed version of it :). I'm gonna' check out the WIP section as soon as I can :0.