They’re a crap shoot. I’ve tried them on several guns, sometimes they work pretty well, other times, not so much. I figured for $15, why not give it a try. I wanted to try it on my Impact but I use a sleeve to tension the barrel, no way it get it to work right. One of the guns that it did work on pretty well was our Condor. It looked a little goofy but I don’t care, I’m concerned with accuracy. Give it a try, on something like a .45 or .50 it might even work better.
Have a great day. Stoti