Thread Protector 1/2 x 28 (9mm & .357SIG Barrel) Smooth in Radio Active Green

This Thread Protector 1/2 x 28 in Radio Active Green is a simple, essential accessory for any Glock owner running a threaded barrel. It’s designed specifically for 9mm and .357SIG barrels with the common 1/2×28 thread pitch. Its primary job is to protect those critical barrel threads from impact damage, debris, and corrosion when a muzzle device like a compensator or suppressor isn’t installed. This piece from Miami Shooters Supply ensures your barrel remains in perfect condition, ready for your next upgrade or range session.

Key Features

• Machined from durable 4140 steel for long-lasting strength and wear resistance.
• Features a smooth, clean profile without serrations for a sleek look on your Glock barrel.
• Finished in a high-visibility Radio Active Green Cerakote that is both visually striking and highly corrosion-resistant.
• Precisely cut 1/2×28 threads ensure a secure, snug fit without cross-threading.
• Keeps dirt, carbon, and moisture out of your barrel’s threads to prevent damage and maintain functionality.
• Anodized aluminum crush washer included for proper timing and a secure, indexed installation.

Built For

This thread protector is built for the practical Glock owner who values both function and a custom look. It’s ideal for those with aftermarket threaded barrels who need reliable thread protection during everyday carry or range use. The bold Radio Active Green finish also appeals to shooters who want to add a distinct, personal touch to their firearm’s aesthetics without compromising on performance.

Specifications

• Compatibility: Fits 9mm & .357SIG caliber barrels with 1/2×28 threads.
• Material: 4140 Steel construction.
• Finish: Radio Active Green Cerakote (H-340).
• Thread Pitch: 1/2″ x 28 TPI.
• Includes: One thread protector and one anodized aluminum crush washer.

FAQ

Will this fit my factory Glock barrel?
No, factory Glock barrels are not threaded. This protector is for aftermarket threaded barrels designed for 9mm or .357SIG with a 1/2×28 thread pattern.

How do I install the thread protector?
Hand-tighten the protector onto your clean barrel threads. Use the included crush washer against the barrel shoulder, then tighten the protector firmly against it until snug. The washer will crush slightly to lock the protector in place and prevent it from loosening under fire.