LanTac USA LLC 9INE Barrel, Fluted, Fits Glock 43/43x, Stainless Steel Finish, Silver 01-GB-G43-NTH-SS Professional upgrade drop in barrels for Glock 43 & 43x Pistols. These Match Grade barrels are precision machined from Certified pre hardened DFARS compliant 416R chromium gun barrel quality stainless steel" to extremely tight tolerances and exacting details.