I had to fix my Mag release after my first range session with the 40 cal barrel. The plastic sheared off and the mag's would not stay in the grip. To fix this I bonded a flat piece of aluminum to the release after removing about half of the plastic. The aluminum then is shaped to the same dimensions as the plastic release. This is much stronger than the original piece. Looks kinda odd two tone but it works! I also had to reshape the lips of my P-11 mags to get them to work reliably. When the mags are fully loaded the top 2 rounds would not feed as the round would lock on the feed ramp as it was caming out of the mag. I changed the release time basically. I have tested it with 9mm and 40. The 357sig test is on the morrow.