Thing on the end of the 22/45

My state has this stupid law that your barrel end can’t be threaded. They get past that by welding or glueing an adapter onto the thread. So all you have to do is buy a silencer that you can slide on and turn. Or you can attach the adapter that gives you thread and thread on a silencer.

But here is the thing. I don’t want a silencer. Well at least for a while.

What I would like is a small adapter like silencer thing that covers that adapter at the end. If it’s a tiny silencer or compensator fine. But this is purely for cosmetics and not sure how to Google this. I don’t know what keywords to use. Assume this even exists.