Hi- IMO, I'm skeptical of a gun. See the pics I posted tonight on the image thread that demonstrate a 9mm gun in the outside pocket of various jacket styles as compared to the BG pic. They are very very different. We couldn't find a scenario where the gun would lay in the pocket backwards....much less take it out of the pocket backwards without it tangling up in the pocket. I've worked on a theory of a concealed weapon jacket but can't find a great match.
I haven't been able to make sense of the gun angle, either, although in looking at the pics, other than the clear blue jeans and blue jacket, the shape of a gun on the suspect's right hand side is hard to unsee. It is all so strange, and it could be a juxtaposition of shadows on a low quality image. We just don't know.