Hi guys... New to the forum and have a question for you: I recently purchased an Advantage Arms conversion kit for my Glock 17. I took it to the range today and was extremely disappointed in the performance, or lack thereof. Background: Thoroughly cleaned slide and barrel prior to use. Used only CCI MiniMags as per manufacturers recommendation. Used new magazine and one slightly used magazine. Result: My rate of FTF was 25%! It was maddening. The slide did not lock back after last round ejected either. I brought it home, cleaned it and noticed a small score or stake mark on the top edge of the barrel/breech. It looks like it is a deliberate score or stake mark but I really can't tell. Not sure if that has anything to do with my failures to feed. I have inserted a few images of the barrel/breech and the result of the FTF on my .22 ammo - bent the bullets all to hell. Any suggestions from those who own a AA conversion kit?? Thanks! Update: Heard from AA and they have been helpful in trying to diagnose the issues. May be mag related, lube related and/or positioning of my left thumb on the slide. The notch on the breech is also normal. More testing to determine true cause.