Originally Posted by bradam
Can I use this to clean up the chamber and bolt carrier on my AR?
I wouldnt. Nothing good comes of loosening up a ar15 bolt.
You must be extremely careful using lappimg compound to do this stuff. The trigger assembly should be no where near the rifle and it should not be used on locking lugs at all. Get a bit of it on a sear and you pretty much instantly have a very unsafe condition.
Lap locking lugs and the bolt will be loose increasing head space to possibly dangerous conditions.