Glock Factory Thread Protector for 9mm Luger G19/G17 Gen 4, Black - 70339

Glock factory-original thread protector designed for 9mm Luger pistols (G19/G17 Gen 4) with M13.5x1 left-hand threading. This protective cap threads onto the barrel to protect the threads when a suppressor or other muzzle device is not in use. Made to OEM specifications for reliable fit and function.