At Lantac USA, precision is paramount. That's why when you get your Lantac 9INE Fluted Non-Threaded Stainless Steel Barrel for the G43 you won't need a gunsmith to upgrade your firearm. The barrels are 6 groove, cut rifled, with a 1:10" twist. They're fully inspected and double honed, ensuring final dimensions that are held to a +/- 0.0002" deviation for maximum consistency, accuracy and quality. These barrels are a drop in fit, ultra accurate and extremely tough. Upgrading your Glock 43 has never been easier or more precise. Features of the Lantac 9INE Fluted Non-Threaded Stainless Steel Barrel for the G43Stainless Steel, Satin Blast Finish with Ultra-Smooth hBN (Hexagonal Boron Nitride) Bore & ChamberCertified Pre-Hardened DFARS Compliant 416R ChromiumFinal Hardness: 38-42 Rockwell C+/- 0.0002" Final Product Deviation Max Roughness Average (RA) of 12Chambers are Match Grade SAAMI SpecificationProudly Manufactured in the USADISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols. Lantac 9INE Fluted Non-Threaded SS Barrel for G43 01-GB-G43-NTH-SS