Heckler & Koch Threaded Barrel USP9 Tactical 9mm 4.56in M13.5 X 1LH Threads. It can also be used on standard USP 9mm full-size models but the O-ring should be removed for proper fit. Specifications for Heckler & Koch Threaded Barrel USP9 Tactical 9mm: Manufacturer: Heckler & Koch Color: Black Barrel Length: 4.56 in Threads per Inch: M13.5x1 LH Caliber: 9mm Luger Gun Make: Heckler & Koch Gun Model: Heckler & Koch USP Tactical 9mm Luger Weight: 3.7 lb Condition: New Features of Heckler & Koch Threaded Barrel USP9 Tactical 9mm Drop In Replacement For Suppressors Or Flash Hiders Package Contents: Heckler & Koch Threaded Barrel USP9 Tactical 9mm O-ring The Heckler & Koch USP Tactical Threaded Barrel 9mm 4.56 Inch Barrel M13.5 X 1LH Threads Black 219069 is a quality addition to the Heckler & Koch lineup. For more great deals on Pistol Barrels by Heckler & Koch please browse our Heckler & Koch Gun Parts page. What firearm models does the manufacturer say Heckler & Koch Threaded Barrel USP9 Tactical 9mm is compatible with? The manufacturer says that Heckler & Koch Threaded Barrel USP9 Tactical 9mm is compatible with Heckler & Koch USP Tactical 9mm LugerHeckler & Koch 226352: Threaded Barrel USP9 Tactical 9mm 4.56in M13.5 X 1LH Threads