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

This Thread Protector 1/2 x 28 in a straight fluted black finish is a essential piece of gear for any Glock owner with a threaded barrel. It’s designed specifically for 9mm and .357SIG barrels, serving the primary function of protecting those critical muzzle threads from impact damage, debris, and corrosion. By keeping your threads clean and undamaged, this protector ensures your muzzle device, like a compensator or suppressor, mounts smoothly and maintains a proper seal every time. Miami Shooters Supply delivers this simple yet vital Glock part with the fast shipping you expect.

Key Features

• Precision machined from durable, heat-resistant steel for long-term reliability.
• Features a straight fluted design that provides a positive grip for hand-tightening and removal, even with gloves on.
• Finished in a deep, non-reflective black oxide that matches factory components and resists wear.
• Installs in seconds by simply screwing it onto your clean, exposed barrel threads.
• Prevents cross-threading and damage to your barrel’s threads when a muzzle device is not installed.

Built For

This thread protector is built for the practical shooter who values equipment maintenance and readiness. It’s the perfect solution for range use, competition, or home defense setups where you may run your Glock without a permanent muzzle device attached. It’s a must-have accessory for anyone who owns an aftermarket or factory-threaded Glock barrel in 9mm or .357SIG.

Specifications

• Thread Pitch: 1/2″ x 28 TPI (Standard for 9mm/.357SIG)
• Caliber Compatibility: 9mm Luger & .357SIG
• Material: Steel with Black Oxide Finish
• Design: Straight Fluted Body
• Compatibility: Fits Glock and other pistols with standard 1/2×28 threaded muzzles.

FAQ

Does this thread protector stay on during firing?
No, this is a hand-tightened protector meant for storage and transport when a muzzle device is removed. You must remove it before firing your firearm.

Will this fit my .40 caliber Glock barrel?
No. This protector is specifically threaded 1/2×28 for 9mm and .357SIG barrels. .40 S&W barrels typically use a different thread pitch (e.g., 9/16×24), so you would need the correct model.