Did this nice one in June for project Marsenary (http://marsenary.com) . Model for Subdivs and some sculpting with boolean in ZBrush. Model was made for future lowpoly retopoly, normal baking and texturing. 5 grades, 3 different optics. Near 120+ details excluding screws, sliders and other small stuff which was groupped or attached to more complex parts. Renders were done in VRay , post processed in Photoshop. Based on great 2d concept by Roman Polyakov. He also helped me with adding style to final renders.