First, let me say that I love Frog Lube paste or liquid lube and have been using it the past year or so with great success in AKs, a P-01 and a P938 -- no problems in those guns whatsoever. I like the fact that it's totally non-toxic, that it stays where it's applied and that the rust prevention properties are second to none as far as gun CLP products. Plus the minty scent and, if I get hungry, I can eat it (believe it's made largely of coconut oil).
However, I did run into a problem with it in the Rami, which may have been my misapplication or over application of it (possibly didn't wipe all the residue off after applying with a heat gun and letting it cure). In a nutshell, it seems to gum up the works on a Rami. Previously, I had been using Tetra teflon gun lube in the Rami with no problems, except that it eventually drips out of the pistol and is does not protect against rust all that well.
A few days after the first application of Frog Lube, I chambered a round and noticed that the slide seemed to move in slow motion: instead of snapping back with authority, it lazily moved back into battery, but did manage to chamber a round. My theory is that the cured, waxy Frog Lube gummed up the complex, pneumatic-like recoil spring, and possibly the rails as well. No matter how many times I worked the slide, had the same effect of moving in slow motion.
As an experiment, I took it out to the range and fired one full 14 round mag in that condition: it did fire, accurately, without a hitch or a jam, except that it only dropped the spent shells about 6 inches to the side! So, obviously, the Frog Lube was gumming up the works.
I took the Rami back home and disassembled it, hitting it with a heat gun and wiping of all excess Frog Lube from the frame, slide, barrel and recoil springs until those parts were totally "dry" (as per Frog Lube's instructions). Upon reassembly, when racked, the slide snapped back into battery with authority as usual.
Took the Rami back out to the range, thinking the problem was solved. Took the first shot from single-action: CLICK - failure to fire. At that point, I pulled the trigger double action and it fired. Howver out of that magazine, I had four or five failures to fire from single-action, that were immediately fired with a double action pull (which is another reason why I prefer a DA/SA trigger for a carry gun as opposed to SA or striker fired).
So, my theory is that the Frog Lube gummed up the firing pin / spring and firing pin channel as well as the complex Rami recoil spring. I'm thinking that Frog Lube may be fine on surfaces like slide rails, but it can gum up the works if used on any part that is completely covered by it in tight quarters after it cures: the Rami recoil spring, firing pins, etc.
Maybe Frog Lube needs to come up with a lighter lube for those parts, or maybe it can be diluted for use in those types of parts and still be compatible with the usual Frog Lube application to rails and other surface applications.
