It's not hard to make a sign with any lettering on it wherever you may be, vinyl decals or even stencils are very portable, even a printer is very portable these days. Even if it is fake, unless there's some big giveaway I'll say at this resolution there's simply not enough to go by. All said and do...

Looks real to me, a professional photo may have more than one light source (sun, strobes, reflectors, etc) and with a shallow depth of field the photo could have objects in focus and others not in focus to emphasize the subject, in this case, the rifle.

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What's up everybody?

Why did I have to select 'British English' for this forum?