Heh! About that PTFE... At least as far back as the Slick-50 days, PTFE was hyped in the market as a super slippery additive based on the deliberate association made with non-stick cookware. The fact of the matter couldn't be further from the truth, as simply adding PTFE to some liquid base does NOTHING for lubrication. Somewhere in another thread here years ago I went over this in enough detail to explain it. Suffice it to say that none of our guns will EVER be operated in the conditions required for PTFE to bond with ANY of the metals of our guns. And if they did... you might as well turn it in at a gun buy back and get a down payment for a new gun.