I've used C-5A from Fel-pro for this, as well as other lubrication requirements. This is the same stuff as is on Glocks from the factory. There's no graphite, and you can get a can from any decent auto parts store that would last you a lifetime, for gun use. I have a can somewhere that I've had for at least 20 years.
Having been a Air Cargo guy in another life, I've learned that anything with the name C-5 only has a 50/50 chance of working.
Mom's comin' 'round to put it back the way it ought to be.
Anyone that thinks war is good is ignorant. Anyone that thinks war isn't needed is stupid.