Keep your muzzle threads clean, protected, and looking sharp with this Thread Protector 1/2 x 28 for 9mm & .357SIG barrels. This essential Glock part is a simple, durable cap that screws directly onto your threaded barrel to shield the precision threads from impact damage, dirt, and debris. Whether your firearm is in the range bag, safe, or on display, this protector ensures your threads remain in perfect condition for when you attach a muzzle device. It’s a must-have, low-cost piece of gear for any responsible handgun owner with a threaded barrel.
Key Features
- Knurled thick spiral design provides an aggressive, non-slip grip for easy hand-tightening and removal, even with gloves on.
- Precision machined from solid steel for maximum durability and a perfect fit on your barrel’s threads.
- Finished in a durable black oxide coating that resists corrosion and matches most factory firearm finishes.
- Simple screw-on installation requires no tools, locks, or timing—install it in seconds and forget it’s there.
- Protects critical barrel threads from dings, cross-threading, and carbon buildup that can compromise future muzzle device attachment.
Built For
This thread protector is built for Glock owners with factory or aftermarket threaded barrels in 9mm or .357SIG who need reliable thread protection during storage or transport. It’s the ideal solution for shooters who frequently remove their compensator or suppressor and want to keep the exposed threads in pristine condition. It’s also a great, clean-looking default cap for those who run their handgun without a permanent muzzle device.
Specifications
- Thread Pitch: 1/2″ x 28 TPI (Standard for 9mm/.223/5.56)
- Caliber Compatibility: Designed for 9mm & .357SIG threaded barrels
- Material: Solid Steel with Black Oxide Finish
- Design: Knurled Thick Spiral Pattern
- Category: Glock Parts & Accessories
FAQ
Will this fit my Glock 19 Gen 5 with a threaded barrel?
Yes, if your Glock 19 (or any Glock model) has a barrel threaded 1/2″ x 28, this thread protector will fit perfectly. This is the standard thread pitch for most 9mm Glock threaded barrels.
Does it come with a crush washer or lock to keep it from loosening?
No, this thread protector is designed to be hand-tightened. The knurling provides excellent grip, and under normal handling, it will not walk off. For absolute security during firing, a small application of vibratite or a similar thread locker can be used.
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