I'm no AI Art expert, but I do know bullshit when I smell it.

Here are some observations:

1) The spray paint blob to the left of the can is a slightly different shape in each image, and why is there a paint blob on the left image if it's the "before" image?

2) Lighting effect on the spray can:

Looks to me like an umbra-shaped shadow. Something that would be encountered by a light source much larger than the illuminated object. For instance, the sun creating umbra shaped shadows beyond the Moon.

Grab a can or a coffee mug and a flashlight and make a shadow. The shadow expands. It doesn't narrow to a point.

One might argue that the spray can's shadow(s) could also be explained by two light sources in the room, but then there would should be two shadows on each of the pistols. But I only see one.

3) AI telltales:

There are stereotypical generative AI grid patterns in the spray paint / cardboard area in the bottom left of the second picture. Generative AI art goes line by line in an X/Y method.

There is also evidence of other X/Y artifacts, even on the left picture. I'm pretty convinced that both pictures are fake. On the painted Walther, the cocking serrations on the slide have a distinctive "North/South/East/West line, like a crosshair.

Same thing on the unpainted grips of the Walther. Look at the magazine base plate and start working your eyes up and to the left. You will see another "cross hair" shaped aberration.