Looks pretty good for just a model, you can be proud of this piece.
Now if you want to dive into making such items for GunZ (not sure if you don't), you want to aim to 100~200 vertices and try to flatted faces in the bottom of your handle into 1 face instead of a few.
GunZ doesn't require a lot of detail cause it is so fast paced and you want to do the minimum on a model to get the best performance while playing (the more vertices, the more it needs to load basically).
