That’s a big gun
https://fedia.io/m/noncredibledefense@sh.itjust.works/t/1266470/GET-BIG-DICK
“I could kill a building with this thing”
You could. This type of gun is not intended primarily for use against people (although this particular gun might be modified to serve the role of a sniper rifle). It’s for shooting aircraft and lightly armored vehicles. By that I don’t mean cars; I mean armored personnel carriers. The bullets would go right through a building’s walls.
I can’t quickly find a photo of this gun’s 12.7 mm bullet doing its thing, but here’s what the very similar American 50 cal bullet does to six-inch-thick concrete:
I want one.
Edit: what I really want is one of those 20mm rifles that can take AA rounds. That’d be fucking sick. Just point it at something and boom! It’s not a problem anymore!
Edit 2: the reason why I like obscenely high-caliber rifles is because it’s fascinating to see all the different configurations that militaries have tried in an attempt to make a mobile, “hand-held” rifle capable of firing such a huge bullet without destroying the user’s shoulder in the process.
Wow, I think that’s a modified DShK, which entered service in 1938. It’s not a museum piece - these guns are still in widespread use.
Thinking of that girl cop in Vampire Hunter D. That rifle she has.