I have a Smith and Wesson M&P Spec-Ops 9mm. This was a limited production suppressor ready pistol that came with a threaded barrel and 3 magazines. I have used this is a host for my trident, and I cannot tell the difference in sound between it and my Sig 226. The barrel is threaded 13.5x1 LH. This has only been used as a range gun and never carried so it is in excellent condition. I would put the round count around 400-500 range. I am selling to fund another project, and I don’t need two hosts for one silencer, and I like a true double action of the sig more than the striker fired S&W. I would like $625 shipped or $600 FTF SPF ! ! !