This SIG SAUER factory replacement barrel is built for the P365-FUSE, a non-compensated 9mm pistol, and adds 1/2x28 threading at the 4.9" muzzle for mounting a suppressor or compensator. Manufactured and heat-treated by Sig Sauer to the same specs as the original equipment barrel, it drops in as a genuine OEM upgrade rather than an aftermarket part. The factory Loaded Chamber Indicator (LCI) witness hole is retained, so shooters keep the visual chamber-status check that comes standard on the platform. Finished in a durable black Nitron coating, the barrel resists wear and corrosion while matching the pistol's factory appearance. A thread protector cap is included to cover the threads when no muzzle device is attached, keeping them clean and undamaged during everyday carry or storage. Sig Sauer P365LS 9mm 1/2x28 4.9" Loaded Chamber Indicator DLC Black Barrel 8902025