The LANTAC 9INE Glock G43 Fluted Barrel 416R - Threaded | Black DLC delivers a drop-in, match-grade upgrade for your Glock 43, engineered from pre-hardened 416R stainless steel for exceptional corrosion resistance, machinability, and high tensile strength. This 6-groove, cut-rifled 1:10 Right Hand twist barrel is fully inspected and double honed (rough and finish) to achieve a precision bore with a max roughness average (RA) of 12 and a match-grade SAAMI chamber polished to a maximum RA of 16, ensuring tightened slide fit, lockup, and superior accuracy. The pre-stressed steel is stress-relieved after rifling and hardened to 38-42 Rockwell C before profiling, with final tolerances held to 0.0002" for consistent performance. Barrels are bead-blasted to a satin finish and offered in three finishes: Stainless Satin Blast with ultra-smooth hBN bore and chamber, Gold TiN with hBN, and Black DLC with hBN for a refined look and enhanced bore protection. The 9INE Glock 43 barrel is a true drop-in, requires no gunsmithing, and is available with or without 1/2-28 TPI RH suppressor threads; threaded models include a thread protector and feature LANTACs proprietary flute pattern to maximize rigidity and reduce weight, delivering improved accuracy in a durable, high-performance upgrade.