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Old October 10, 2022, 08:48 PM   #1
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Join Date: July 11, 2011
Location: Kansas
Posts: 532
O-Ring For Thread Protector

Does anyone have a suggestion for how to keep the thread protector on a threaded barrel?

My M9A4 came with a couple of O-rings in a little bag that work very well at keeping the thread protector from coming loose. Even put one on my HK SP5 with similar results. However, I don't have one that will fit a .45 barrel.

Any ideas?
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Old October 10, 2022, 09:42 PM   #2
44 AMP
Join Date: March 11, 2006
Location: Upper US
Posts: 27,184
O rings are cheap and available in many different sizes at about any decent hardware store.

I would just de-grease the threads and use a drop of "Guntite", which is a threadlocker type product specifically made for gun screws to keep them tight but allow removal with the proper tool.
All else being equal (and it almost never is) bigger bullets tend to work better.
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