Thread Protector 1/2 x 28 (9mm & .357SIG Barrel) Straight Fluted in Violet

This Thread Protector 1/2 x 28 in Violet is a functional and stylish cap for your pistol’s muzzle threads. Designed for 9mm and .357SIG barrels with the common 1/2×28 thread pitch, it screws on to protect those critical threads from impact, dirt, and debris when a muzzle device like a compensator or suppressor isn’t installed. Beyond pure protection, its straight-fluted design and vibrant violet finish offer a distinct visual upgrade, letting you personalize your Glock or compatible pistol with a pop of color while maintaining a clean, finished look. Miami Shooters Supply ensures you get this essential Glock part with our signature fast shipping.

Key Features

• Precision-machined from 6061 aluminum for a durable yet lightweight build.
• Features a straight-fluted exterior design for enhanced grip and a unique aesthetic.
• Finished in a hard-anodized violet for exceptional corrosion resistance and lasting color.
• Installs in seconds by hand-tightening onto your barrel’s external threads.
• Serves as a protective cap to prevent thread damage during transport or storage.
• Provides a streamlined, snag-free profile compared to larger muzzle devices.

Built For

This thread protector is ideal for Glock owners and shooters with compatible threaded barrels who prioritize both equipment care and personalization. It’s perfect for range use, competition, or as a finishing touch on a custom build where you want to safeguard your barrel’s threads without committing to a permanent muzzle device. The violet color offers a standout option for those looking to add a custom accent to their firearm.

Specifications

• Thread Pitch: 1/2 x 28 RH
• Caliber Compatibility: 9mm & .357SIG (for barrels with 1/2×28 threads)
• Material: 6061 Aluminum, Hard Anodized Finish
• Style: Straight Fluted
• Color: Violet

FAQ

Will this fit my Glock 19?
Yes, if your Glock 19 has an aftermarket threaded barrel with a 1/2×28 thread pitch, which is the standard for 9mm. It will not fit factory non-threaded barrels.

Is the thread protector timed or does it index in a specific position?
No, this is a simple thread protector. It is not timed for a compensator or suppressor and will hand-tighten to a random orientation. For a secure, indexed fit, a small amount of witness-marked Teflon tape can be used on the threads.