I want to bump this back to the top to find out anything new on these 9mm conversions with oem barrels & ask if anyone else has tried this with the M&P 40 pro 5" barrel. Also would like to know what the reliability of the 9mm barrel in the 40s&w is turning out to be. I want a target pistol in 9mm that I can also use as a HD pistol in 357sig & 40s&w. If the 5" oem barrels swap the same way as the compacts seem to do then this is the answer. If not I will be buying the Glock 35 which has many conversion options awaiting me after purchasing it. I am totally intrigued with this 9mm OEM barrel conversion drop in concept.