The Performance Center Ported Shield 9mm features a ported barrel and slide to reduce muzzle flip on S&Ws slim single-stack carry pistol. The ports redirect propellant gases upward to counteract muzzle rise, enabling faster target reacquisition for a sub-inch-wide pistol. A Performance Center tuned trigger completes the package. Type: Pistol Action: Semi-Automatic Caliber: 9mm Capacity: 8 Year introduced: 2018, USA Weight: 20.8 oz Overall length: 6.1" Status: Active Intended use: Concealed Carry