I still have a rifle with an old weaver 4X scope on it. It will fog up, but only when you keep it in a warm environment and go to a cold environment.
My easy solution is to leave the rifle in a case in the back of my truck when I hunt with it, never fogs up like that no matter how cold it gets. I may have to research and see if it will hold gas (N2).
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NRA Lifetime Member Since 1999
"I ask, sir, what is the militia? It is the whole people except for a few public officials." George Mason
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