I agree with gnmontey. I have a half dozen of these Omega locks now and they are all starting to show wear. I use them at least 2 or 3 times a week. They are getting hard to turn with the key. They start to spin inside the barrel before the key unlocks them. The case rim where the extractor grabs it is starting to become rounded and will not keep the slide locked. A quick pull on the slide and and it racks back with the lock still in the barrel. This is on 2x45acp, a 40 S&W and a 22. All showing the same signs.
I won't buy them again. I went back to trigger locks.