I have been a firearms owner since I was a kid and like anything else, when you use something a lot, it can break. Over the years, I have had certain things break on my guns from time to time. A few years ago, my son was out shooting my Marlin 9mm rifle when the action locked up and made the gun unfireable. When he got the gun back to the house, the first thing I did was to go on the Internet and start researching the particular gun and why it stopped working and what the possible causes were. After carefully disaasembling the rifle, I found the recoil buffer to be damaged.

I then found another website which explained exactly how to replace the buffer. I ordered a new recoil buffer from the manufacturer, installed it myself and the rifle is now working perfectly. However I don't do all of my own gunsmithing jobs myself. In the words of Clint Eastwood, "A man's got to know his limitations". That's why I have a fantastic gunsmith who helps me on the big projects. I found this video about people who do their own gunsmithing and are in way over their heads. These folks need to leave gunsmithing to the professionals.