best gas masks for aiming and shooting?

[Drift]

I was able to "function" in a Mark 17a2. Cant say it was ideal, but it was workable. It would probably work best with something like a red dot site. And I was able to pick up some surplus ones cheap. Unissued. And spare filters are a must. That bug out bag also has a surplus civil defense geiger counter and a few dosimeters in it.