If I'm seeing this correctly, those are from ESS, aka, eye shield systems. I owned a pair of their ICE eye shields for a while.

They use a bullet resistant material for the "lenses" which can help reduce the impact of some projectiles, in the hope that it will save you from losing your vision from being shot in the face.

I believe their benchmark was some kind of shotgun round at a few meters, probably birdshot or other small/sprayed shot.

I bought them because they're roughly equivalent to most safety glasses, and I was doing work at the time that required such personal protective equipment. Mine came with three "lenses", one clear, one that was amber, and one they called "smoke" which appears to be what this character is wearing.

I liked the eyewear, but I seem to have lost mine over the years. I would buy it again simply for the durability, as driving glasses. However, since I'm not a kid anymore, and I have financial responsibilities, I can't really justify $100+ on eyewear unless it's a prescription or something else I require in order to live.

I assume this guy has ESS because he is a GUN fanatic. So he wears them while being unsafe with his GUNs.