I don't have any pictures of how the gun is mounted. I used the Williams Brothers guns, I epoxied a 6x32 bolt into the bottom of the gun housing and drilled the holes in the top re-enforced stringer and then put a nut on it. The mounting of the windshield is on a ply tab that is mounted with two wood screws. Mount the windshield first then mount the gun.
Hope this helps
Rich