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

This Thread Protector 1/2 x 28 in Radio Active Green is a functional and highly visible accessory for your threaded Glock barrel. If you run a 9mm or .357SIG pistol with standard 1/2×28 threads, this protector keeps debris out of your muzzle threads and prevents accidental damage when a muzzle device isn’t installed. Its bold color provides a quick visual check and adds a distinct touch to your build without compromising performance. Miami Shooters Supply delivers this essential Glock part with the fast shipping you expect.

Key Features

• Precision machined to standard 1/2×28 threads for a secure, reliable fit.
• Aggressive knurling around the circumference ensures a positive grip for hand-tightening or removal, even with gloves on.
• Finished in a high-visibility Radio Active Green Cerakote for durability and a standout appearance.
• Protects critical barrel threads from impact damage, dirt, and carbon buildup.
• Lightweight design adds minimal length and weight to your slide assembly.

Built For

This thread protector is built for the Glock owner who values both function and distinct style. It’s ideal for range use, competition, or as a placeholder when your suppressor or compensator is not mounted. The radioactive green finish makes it easy to verify the protector is secure at a glance and personalizes your firearm in a popular color.

Specifications

• Thread Pitch: 1/2″ x 28 TPI (Standard for 9mm/.223/5.56)
• Compatibility: Designed for 9mm and .357SIG caliber barrels with 1/2×28 threading, common on many Glock models.
• Material: Manufactured from steel or high-grade aluminum (exact material confirmed upon purchase).
• Finish: Cerakote Elite Series in Radio Active Green for extreme wear and corrosion resistance.
• Installation: Hand-tighten only; no tools required.

FAQ

Will this fit my Glock 19 Gen 5 MOS barrel?
Yes, if your factory or aftermarket Glock 19 barrel is threaded 1/2×28 for 9mm, this thread protector will fit perfectly. Always confirm your barrel’s thread pattern before ordering.

Is the finish durable?
Absolutely. The Cerakote ceramic coating is baked on for exceptional hardness and resistance to solvents, oils, and holster wear, far outperforming standard paint or anodizing.