This is great info on the Camp 9 thanks. I just purchased one and ordered a buffer and spring right away. Unfortunately I was so eager to test fire it I didn't inspect the buffer before the new one came. After 4 shots the gun jammed and small pieces of the buffer fell out. Hopefully everything will be OK when I replace the buffer and no more damage was done. A lesson for anyone else buying one. Check and replace the buffer then test fire.