Glock 19/17 Gen4 Thread Protector Features The Glock Thread Protector is manufactured specifically to fit the threaded barrels found on the Glock 19 and Glock 17 Gen 4 chambered in 9mm Luger. Threading directly onto the exposed barrel it shields the muzzle threads from dirt moisture and impact damage when a suppressor or other muzzle device is not attached. Keeping the threads protected ensures a clean consistent fit every time a muzzle device is installed later. As a genuine Glock factory part it is manufactured to the same tolerances as the pistol itself for a secure precise fit. Finished in black the thread protector blends seamlessly with the factory slide and barrel finish keeping the pistol s appearance clean when no device is mounted. Installation is simple requiring only hand-tightening onto the barrel s threads. Carrying a spare protector is a smart practice for owners who frequently swap between a bare barrel and a mounted suppressor or compensator. For Glock 19 and Glock 17 Gen 4 owners with a threaded barrel this factory thread protector is an essential low-cost accessory. Glock 19/17 Gen4 Thread Protector Specifications Manufacturer: Glock Type: Thread Protector Caliber: 9mm Color: Black Compatible Hosts: Glock 19 Glock 17 Gen 4 Available At: GrabAGun