Don't assume every square inch of Vietnam is triple canopy jungle so thick that you can't see past 20m in. Designated marksmen were recognized as useful, by both Northern and Southern forces.
The MGS5 launcher is (like most weapons in that game) sort of a mashup. It has elements of the GP-34 along with some fictional elements not quite in any GP launcher.
The standalone setup for it is also a fictional design. It vaguely resembles the RGM-40 Kastet, but with a lot of liberties taken.
I use Crocs like they are final form flipflops. Any time I'd be comfortable wearing flipflops, I just wear crocs instead. People hate on them mostly because of internet groupthink conditioning (see also: pineapple on pizza and the word 'moist').
It's Turnip28, everyone's incompetent. The artillery is supporting Horseless Dragoons.
Jump good.
A photo was provided. For you, it is bad form to accuse art of being AI without any articulatable reason and without having even done a cursory image check. Going around accusing random pieces of art of being AI makes you a nuisance rather than a hero.
If you are worried about AI, a simple reverse image search could have cleared up your suspicions in about 30 seconds. It is bad form to accuse a piece of art of being AI based on nothing.
Please do not accuse art posted here of being AI without an articulatable reason.
I can't confirm original provenance, but I checked before posting and found this image posted as far back as 2017, so I think it's safe.
The engineering is there.
Also the M84 scope fitted in the photo was only 2.5x magnification. It was really low and more suited to a marksman role than a dedicated sniper role. Hathcock for example most commonly used an 8x scope, in comparison.