Rear sighting apparatus missing or too far forward to effectively use. Angle of gunner's head suggests the rear sight is too low and provides an awkward firing position that would likely cause severe neck injury from recoil when weapon is fired. I suggest placing a rear sight further to the rear (preferably an open aperture), the front sight further forward, and a cheeck piece on or part of the stock. Judging from the location of the magazine, I would expect an ejection port on the side of the weapon on the right side of the weapon in close proximity to the magazine. Given a 25mm size weapon, I presume that the size of the stock includes a recoil mechanism as well as the chamber, bolt and trigger mechanism. I also presume that the round is a relatively low velocity projectile like the 40mm grenade instead of a high velocity projectile such as is fired by aircraft. Presumptions, however, are a little more scientific than assumptions but equally as dangerous. And don't worry about 3DS. It imports easily into Poser.

Gordon