Foremost, the workmanship is everything you expect out of PMM, just perfect. The instuctions are easy to follow and should you need to followup with a question they are always ready and willing to help. If you are attaching this to a Glock 19 like me, you’ll find that a Kydex Glock 34 holster accomodates the new addition perfectly. I also attached a Crimson Trace CMR 204 and had Werkz Holsters hook me up with an IWB for the rig. Very comfortable. A word od caution that may save you some aggravation- if you allow your thumbs to ride the slide, coupled with the reduced pressures available for propelling the slide reward…you will more than likely experience FTF and FTE. I had issues with every imaginable 9mm bullet weights and pressures. Plus P, military, 74gr ARX to 158 gr FMJ. All worked flawlessly after I changed my grip to keep my thumbs from dragging the slide. The 74 gr fed just as well as the Lehigh Defense 105gr to subsonic 147 and 158. 300 rounds doen range and zero issues.