Re: the Jennings .22 LR Semi-Auto
While you may love your Jennings, it is what is referred to as a "Saturday Night Special". It is a throw away gun made cheap and sold that way. Bad guys would carry the gun, use it, and throw it away as it had no value to speak of. They are made of pot metal (a zinc alloy that melts are low temperatures and is soft) making them not very durable at all. In short, they are junk guns.
They also fail by shooting the slide off the back of the frame at the shooter. I saw this happen to one of my fellow shooters about 20 years ago when the gun was brand new.
The best place for this gun is the trash can. If that bothers you then disassemble it and throw out the parts at a rate of a few a week in the regular trash pick-up. Some cities' police will offer to take the gun and dispose of it correctly relieving you of any responsibility.
Sorry, but it is what it is..... a unsafe, crummy pot metal gun.