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

This Thread Protector 1/2 x 28 in a Thick Spiral design is a functional and essential accessory for any Glock owner with a threaded barrel. If you run a 9mm or .357SIG barrel with the common 1/2×28 thread pitch, this protector is for you. Its primary job is to shield those critical barrel threads from impact damage, debris, and corrosion. The robust black spiral design adds a clean, finished look to your firearm while performing a vital protective role.

Key Features

• Machined from durable, high-grade 4140 steel for long-term strength and reliability.
• Features a thick, spiral-fluted design that provides enhanced grip for easy hand-tightening and removal.
• Finished in a matte black oxide coating that resists wear and matches most factory firearm finishes.
• Precisely threaded 1/2×28 to fit standard 9mm and .357SIG threaded barrels seamlessly.
• Designed to be hand-tightened only, ensuring quick installation without the need for tools.
• Protects your barrel’s investment by preventing thread damage that can compromise muzzle device attachment.

Built For

This protector is built for the practical Glock owner who values equipment preservation. It’s ideal for range use, competition, or secure storage, keeping your barrel threads in perfect condition for when you attach a compensator or suppressor. It’s a simple, no-nonsense piece of gear that serves a clear purpose in your kit.

Specifications

• Thread Pitch: 1/2″ x 28 TPI (Right-Hand)
• Caliber Compatibility: 9mm, .357SIG (for barrels with 1/2×28 threads)
• Material: 4140 Steel
• Finish: Black Oxide
• Design: Thick Spiral/Fluted

FAQ

Will this fit my Glock 19 Gen 5 with a factory threaded barrel?
Yes. If your factory or aftermarket Glock barrel for 9mm/.357SIG has the standard 1/2×28 thread pitch, this thread protector will fit correctly.

Do I need to use a wrench or Loctite to secure it?
No. This thread protector is designed to be securely hand-tightened. Using a wrench or thread-locking compound is unnecessary and may make it difficult to remove later.