Idk how. Being intria driven they rely on recoil. Having lube on the bolts and slides speeds up the process as there is less friction.
I lightly coat mine, and have never had a problem down into the negatives.
As far as the other guys running them dry, I can't say other than mine in cold weather will be very slow if I don't have it lube on it. Slow as in shoot, drink a cup of coffee and maybe it will close.
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If money talks; then I got a lot to say i'm on the grind trying to make a hundred thousand dollars a day! We play with big cash and we blowin money fast. I need a G for every light bulb on the Vegas strip!!!