I have a colt govt that I have been shooting competively for about 5 yrs. It is a custom job and used oil exclusively since I got it customized and zero malfunctions.

I bought some slide glide grease and put it on the rails and barrel lugs. I had my first failure to feed...ever in a match last week.

All it took was a bump of the mag and it went into battery.

The only thing different was grease.

I going back to oil.