I will say I did have a grease related malfunction once.
My buddy bought a lightly used M92 Beretta Prince George's County Sheriffs Dept. trade-in. We field stripped it before shooting and confirmed it had the new -style locking block installed, then took it out to the range.
No primer hits, and couldnt move the firing pin when the pin block was lifted out of the way. Incidentally, you have to perform some FP acrobatics to detail strip the slide, so NOT fun.
Turns out the pin channel was packed FULL of dried grease of some sort- it was like tar at that point. No evidence of the stuff anywhere else in the gun- weird.
Soaked it in brake cleaner and scrubbed the channel with a bore brush until it shined, then soaked it again. Couple of drops of light oil and it ran like a top.......until the barrel broke.
But thats another story.
The armorer cleaned everything but the firing pin channel (which should have never been oiled much less greased) before they sold it.
PS How would you have liked to been that cop when he needed it.... click! Hopefully it spent a long time in storage before bought.
