Found the concept of this Helghast ST14 Semi-automatic Rifle from Killzone 2 and just had to try modelling it. It was tricky as it turned out that the concept didn't quite show the width of the components, so had to experiment a bit, especially the since I haven't seen the rifle in action in the game. As usual I created a highpoly version of the rifle and then baked ao/normals to a lowpoly version.

Screengrabs was made with 3DS Max renders and Laurens Corijn (Xoliul)'s viewport shader