Glock | Thread Protector M13.5x1LH | 9mm G19/G17 Gen 4

This is the Glock factory thread protector specified for 9mm Luger G19 and G17 Gen 4 pistols with M13.5x1LH left-hand threads. It is a simple component intended to protect muzzle threads when a muzzle device is not installed. Typical uses include protection during storage and when changing or inspecting muzzle devices at the range or during maintenance.

Product Specifications

• The manufacturer is Glock.
• The product is listed as Glock Factory Thread Protector for 9mm Luger G19/G17 Gen 4 M13.5x1LH Black Pkg.
• Compatible models are G19 and G17 Gen 4.
• The intended chambering is 9mm Luger as indicated in the product name.
• The thread pitch is M13.5x1LH, denoting left-hand threads.
• The finish is specified as Black.
• The item is supplied as a Pkg per the product listing.
• The weight is 0.048.
• The UPC is 764503060632.

This factory thread protector provides a low-profile, manufacturer-specified solution for keeping muzzle threads free from damage and contamination when no device is installed. Its straightforward design supports routine maintenance and makes swapping muzzle components simpler while preserving factory fit and alignment.