I run Brian Enos Slide Glide on my Pistol and AR. CLP on the shotgun. Slide Glide goes a long way. You don't have to put much on, and it stays were you put it. Tried it on the shotgun, and it just didn't like it, guess it was to thick for it. I have see Froglube cause failures on shotguns to. Same reason, being to thick. I'd like to find something better than CLP to use on the shotgun, but won't use motor oil. Hate the smell it leaves in the gun.