the Jennings .22 LR Semi-Auto
I have had one of these guns for years. It was cheap to buy then and is cheap to buy now.
I have had 2 problems with it:
1. The safety could be a lot better. It will go off safe just rubbing against the inside of your pocket. Even in a holster the safety button will catch something and move to "Fire".
2. Rapid fire can not be accomplished due to the action not being able to extract the spent shell and feed in a new one. I have to fire mine with a small pause between trigger pulls to keep from jamming. I saw on YouTube where you can make a modification on the extractor and the front of the chamber that can help this a lot. But, that requires a gunsmith to accomplish and I wonder if the gun is worth it?
While I love to fire the .22 LR caliber in different guns that I have. The Ruger MKlll. .22/.45 Target Pistol is the best. That was a great investment.