HK Thread Protector Features The HK Thread Protector is purpose-made to HK specifications for a secure flush fit on 9mm Luger tactical barrels across the USP P30 and VP9 platforms ensuring compatibility and reliability that aftermarket alternatives cannot match. The M13.5x1 LH thread pattern is machined to tight tolerances threading on smoothly and seating firmly without play or wobble to protect the barrel crown and threads from dirt debris and damage during storage and carry. The knurled exterior provides a positive gripping surface for easy hand-tightening and removal without tools even with gloved hands in the field. Built to the same standards as the pistols it serves this thread protector maintains the clean factory appearance of HK s threaded tactical barrels when running without a suppressor or muzzle device. Its compact low-profile design adds no meaningful length or bulk to the barrel preserving the pistol s original handling characteristics. For HK USP P30 and VP9 owners with threaded barrels this is the definitive factory protection solution. HK Thread Protector Specifications Manufacturer: HK Model: Thread Protector Caliber: 9mm Luger Thread Pattern: M13.5x1 LH Firearm Fit: HK USP 9T HK P30 HK VP9 Finish: Knurled