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A threaded barrel with nothing on the end of it is asking for trouble. One good ding on the crown or a bent thread and your suppressor or comp might never seat straight again. This little steel cap from Yankee Hill Machine is cheap insurance against exactly that. It spins onto standard 1/2×28 threads, the most common pitch on 9mm pistol barrels, and covers everything up so your threads stay clean through range bags, holsters, safes, and everyday handling.
The .570 inch outer diameter is the detail that matters here. A lot of generic thread protectors are noticeably fatter than the barrel they sit on, which looks clunky and can hang up on holsters. This one is sized to sit flush or near flush with most threaded 9mm barrels, so the pistol keeps its clean lines. It also holds a knurled outer surface so you can install and remove it by hand without tools. Steel construction with a black plated matte finish means it shrugs off solvents, handling wear, and the general abuse a pistol muzzle sees.
YHM has been machining suppressors, muzzle devices, and barrel hardware in Massachusetts for decades, and their thread protectors come off the same equipment. The threads are cut properly, which sounds like a low bar until you try a bargain-bin protector that wobbles on and chews at your barrel threads. This one threads on smooth and stays put.
If you just picked up a suppressor-ready pistol or had a barrel threaded, grab one of these for the times your can or comp is off the gun. It takes two seconds to install and saves you from the kind of thread damage that turns into a gunsmith bill. Verify your barrel is 1/2×28 before ordering, and you're set.
It fits barrels threaded 1/2×28, which is the standard pitch for most 9mm suppressor-ready pistols like threaded Glock, SIG, and S&W barrels. The .570 inch outer diameter matches most 9mm barrel profiles for a flush look. Double check your barrel's thread pitch and diameter at the muzzle before ordering, since a few 9mm barrels use metric threads instead.
No, it installs by hand in a few seconds. Just thread it on snug with your fingers. Some folks add a rubber O-ring or a dab of blue threadlocker if they find it backing off during shooting, but for storage and transport, hand tight does the job.
Yes, a thread protector is bore-safe and does not touch the bullet path. It simply caps the exposed threads the way a muzzle device would. Just check it stays snug during a range session, since vibration can loosen any thread-on part over time.
It's machined from steel with a black plated matte finish, so it stands up to solvents, holster wear, and daily handling better than aluminum alternatives. YHM machines these in the USA on the same equipment used for their suppressors and muzzle devices, so the threads are cut clean and true.
| UPC | 816701014020 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | YHM-3418-B |
| Color | Black |
| Product Type | Thread Protector |
| Model | |
| Quantity | 1 |
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