Need constructive criticism

[Darkness]

I got bored and modeled a BR for fun. So I just want some suggestions.

http://img229.imageshack.us/img229/1127/sidesnk8.th.png (http://img229.imageshack.us/my.php?image=sidesnk8.png)

http://img201.imageshack.us/img201/2527/topbottomuo0.th.png (http://img201.imageshack.us/my.php?image=topbottomuo0.png)

http://img138.imageshack.us/img138/6669/frontbackfz0.th.png (http://img138.imageshack.us/my.php?image=frontbackfz0.png)

http://img164.imageshack.us/img164/7294/scopert4.th.png (http://img164.imageshack.us/my.php?image=scopert4.png)

http://img170.imageshack.us/img170/8646/fpig2.th.png (http://img170.imageshack.us/my.php?image=fpig2.png)

Renders look a bit bad due to my lack of lighting knowledge.

[Zeph]

If memory serves the "forward grip" is rounded and tapers into the stock.

[Darkness]

I couldn't get a good view of the grip it looked either rounded or flat. And I have got to get rid of the smooth groups on the scope it just looks bad
http://img523.imageshack.us/img523/3691/sideskw6.th.png (http://img523.imageshack.us/my.php?image=sideskw6.png)