Faxon Firearms Match Series, 1:10 Twist Barrel, 3.7, 9MM, Straight Flued, Fits Smith & Wesson M&P Shield/Shield Plus, Threaded 1/2X28, Nitride Finish, Black MPB910NSSOQ-T Faxon's Match Series Pistol Barrels for Smith and Wesson/M&P are machined 100% in-house from stress-relieved 416-R stainless steel. These barrels are then given a black Nitride or PVD coating to increase lubricity, barrel life, and resistance to surface wear. All barrels are conventionally rifled to allow a wider range of ammunition to be used, including cast lead. The barrels drop into factory-spec slides with no gunsmithing required. Better-than-factory tolerances ensure a consistent, tighter lockup than OEM.