Works just like the stock barrel - SilencerCo Threaded Barrel - S&W

I currently purchased this for my Gen I M&P full size 9mm for use with a SilencerCo O36M with the piston adapter. The fitment was perfect and the gun shot perfectly with or without the suppressor. The build quality is great and is what you would expect from SilencerCo. No machining or smithing was needed.