My grandfather gave me a S&W K-22 when I was 12 (1962) I have shot well over 10,000 rounds through it. I remember campouts that I shot 2 boxes of 500 rounds. I still have not had to adjust it or have any repairs. As you can well imagine, a teenager with a handgun also will fast draw it... HUNDRED of times! I think they renamed the gun... but it's still solid as the day it was given to me!