Shot the R9 (30 rounds of Lawman 124) without a problem. When I went to disassemble the pistol for cleaning, the threaded wheel that holds the recoil spring assembly together had unscrewed itself and fell off. I had this happen twice before. The first time was just after I received the piece from Eric so I sent him the parts and he put it back together. Then I happened again not too long ago and I got it back together. This time I slathered the post with Loctite Blue and reassembled the spring assembly. I suspect this could have damaged the pistol had it happened when I was firing; just really glad I quit when I did!