I've been looking at the M27 for a while. In surfing around, I see that a 9mm conversion barrel is sold by several manufacturers. I reload 9mm and have heard that most Kabooms happen with the .40 reloads and stock barrels that don't fully support the bullet casing. Now, for practice shooting and shooting my 9mm reloads, has anyone had any experience with the 9mm conversions for the M27? Do I need to change any other parts so that the 9mm bullet will feed/eject properly? Also, anyone out there (with years of experience) shooting their .40 reloads in a stock Glock barrel? Opinions wanted.