The Faxon Match Series Pistol Barrel for Smith & Wesson M&P Shield delivers precision performance with 416-R stainless steel construction and nitride finish for enhanced durability and accuracy.Faxon Match Series Pistol Barrel for S&W M&P Shield9mm caliber with 3.7" barrel length416-R stainless steel construction with nitride coatingFlame fluted profile for weight reduction and heat dissipation1/2x28 threaded muzzle for suppressor/muzzle device compatibility1:10 twist rate with conventional button rifling11-degree target crown for improved accuracyDrop-in installation - no gunsmithing requiredMachined 100% in-house with better-than-factory tolerances for consistent tighter lockup than OEM. Compatible with a wide range of ammunition including cast lead rounds.