And finally got a chance to try it on my Mini-14 today. I'm impressed, it actually did a pretty fast job of cleaning the barrel using only an Otis cable and patches. Reading the label says it contains corrosion inhibitors so it's safe to leave in the barrel indefinitely, but it has a pretty strong ammonia smell to it. I'm curious if any of you have used it and if you trust it enough to just leave it in the bore. I didn't, I ran a couple dry patches and wiped it out with Ballistol as is my usual custom.