Faxon's match series pistol barrels for Sig P320 are machined 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.