a definate photoshop, some of the lighting doesnt match, a mix of blur and sharp instances, while either or should be present (middle gun is sharper while side guns are blurry. guns diverge too much from each other making it look like the right gun is out of place from the whole mount.
after seeing photo on top, this botom one jumps out as a photoshop too, lighting and sharpness dont match the over all image. If you look at the edges of the whole wing with the mount, you can tell that it doesnt look right, thats where the rest of the image has been erased so the edges around the guns and the wing are blury. Look at the end of the wing where it touches the trees and the light green empty field, irregularity jumps our right away.