SilencerCo AC2023 S&W M&P 9mm 4.6" Melonite This S&W M&P extra barrel from SilencerCo features a melonite finish and a rate of twist of 1:10. Caliber or Gauge: 9mm Length: 4.6" Model: S&W M&P Twist: 1:10" Finish: Black Melonite Type: Handgun Barrel Type: Threaded
