Faxon's Duty series pistol barrels for Smith & Wesson M&P are machined 100% in house from stress relieved 4150 CMV steel, ensuring exceptional durability and performance. These barrels are coated with a black Nitride finish, enhancing lubricity, barrel life and resistance to surface wear for long lasting reliability. The barrels are conventionally rifled, allowing for a broad range of ammunition, including cast lead, making them versatile for various shooting needs. Designed to drop into factory spec slides with no gunsmithing required, these barrels offer better than factory tolerances, ensuring a tighter lockup than OEM parts. Whether for your M&P Shield 1.0, 2.0 or the new Shield Plus with a 3.10 inches barrel, these barrels are the perfect upgrade for enhanced accuracy and performance. Manufactured in Faxon's Cincinnati, Ohio facility, these M&P Shield barrels feature the signature X logo engraved on the top of the hood, with layered pocketing and caliber identification on the ejection port side. As with all Faxon products, these Match Series Barrels are backed by Faxon's lifetime guarantee, ensuring they deliver premium accuracy, fit and finish for years of reliable performance. 4150 premium steel selected for superior durability, longevity and accuracy 9mm SAAMI chambers superior accuracy with full SAAMI compatibility and reliable performance Tighter tolerances offers a drop-in installation with improved fitment and enhanced lock-up Conventional rifling is fully compatible with cast bullets The firearm is equipped with an 11 degree target crown Durable salt bath nitride finish for superior corrosion-resistance and enhanced wear protection Standard 1/2-28 muzzle thread for broad compatibility with suppressors and muzzle devices