picked one of these up at Cabela's the other day, thinking it might be useful for practise. Unfortunately when I tried it in my LCP it would not lock in. I rammed it so hard trying to get it to lock I chipped a tiny bit of polymer off the pistol. Took it back and they tried it in a different LCP, same problem. Tried two others off the rack in their LCP, same problem. During the conversation the assistant mentioned that others had had the same problem. So if you're thinking of getting one, have your LCP on hand to test it, to save yourself a trip returning it to the store if it's a bad one (Cabela's check guns at the door, but I could have had my LCP in the car).