Glock 19/17 Thread Protector Features The Glock Thread Protector is a genuine factory part designed to thread directly onto a Glock 19 or Glock 17 Gen 4 barrel s M13.5x1 left-hand muzzle threads. Keeping the threads capped when a suppressor or compensator is not mounted prevents dirt pocket lint and moisture from fouling the delicate thread pattern over time. This simple step protects the barrel s resale value and keeps the threads ready to accept a muzzle device at a moment s notice. Because it is a factory Glock part it is machined to the exact tolerances needed for a secure properly seated fit. Finished in Black to match the factory finish of most Glock pistols the thread protector blends in seamlessly with the rest of the firearm rather than standing out. Its compact design adds negligible length or weight to the pistol so it does not interfere with holster fit or everyday carry. Installation is simple requiring only hand tightening onto the exposed threads before holstering the pistol. The Glock Thread Protector gives threaded barrel owners peace of mind that their investment stays protected until it is time to run a suppressor or other muzzle device. Glock 19/17 Thread Protector Specifications Manufacturer: Glock Model: Thread Protector Color: Black Compatible Hosts: Glock 19/17 Gen 4 Thread Pitch: M13.5x1LH Quantity: 1 Caliber: 9mm Available At: GrabAGun