Just a ‘shot in the dark’ question about this .22 rimfire rifle. Have a chance to get one, hopefully cheap. The lever doesn’t lock in place, which seems to be common with this model but no one on other blogs give info on how to fix the condition. This rifle was made in the ‘50s or ‘60s.  So just checking if anyone here has ideas.

Have looked at Rimfire Central with no luck.

The rifle is ad displayed about 1/3 down the page.

https://tincanbandit.blogspot.com/2019/11/firearm-factory-of-month-noble.html