Anyone ever use lithium or high quality marine grease? I wondered if a small amount on a bolt or slide rails would be a good or bad idea.
I have used lithium grease on rails and on the locking blocks of Beretta 92 and PX4 pistols. Gives every appearance of working well and staying in place. I only have one pistol, an antique, that ever goes more than two or three months without being shot, though, so I don't test the "staying in place" characteristics too rigorously.
I have messed with lots of different lubes without being terribly impressed with the advantages of one over another. Remoil and Froglube are not on the list of things I have tried. Recently I picked up some Weapon Shield, though, and I think I like it as well as anything I have tried so far.