Glock Factory Thread Protector for .40 S&W G23 Gen 4 M14.5x1LH, Black - 70349

Glock factory-original thread protector designed for .40 S&W G23 Gen 4 handguns with M14.5x1 left-hand threaded barrels. This protector prevents debris accumulation and protects the barrel threads when a suppressor or muzzle device is not installed. Comes as a single unit in original Glock packaging.