If you have all the factory parts they can be worked over to actually work without drawing blood from your thumb each time, I did two of them before and went from impossible to lock unlock without a nylon punch and small hammer to actually functioning with my thumb as it should.
Just need some small needle files, some very find automotive type sand paper and optional but helps Dremel and polishing compound, bit of cold blue if you feel the need after if the ring itself needed work.