TRUE offers its drop-in ready barrel for the Sig Sauer P365-FUSE, designed for the 4.3″ P365-FUSE 9mm models (also available for P365 3.1 and P365XL 3.7″). TRUE barrels deliver unmatched accuracy, combining advanced cuts, chamfers, and feed ramp designed to outperform OEM standards and to ensure reliable feeding of all types of ammunition designs.