Canada Post Shipping Disclaimer:
Canada Post continues to operate as CUPW initiates strike action with national overtime ban. At this time, there are no rotating strikes or national work stoppage. While the company continues to operate, customers may experience delays. We will keep you informed if strike activity escalates and there are changes to postal operations
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True North Arms
This tool is used to verify thread pitch. It has the marked thread on both inside and outside.
Essentially the situation is you have a barrel or muzzle device that you don't know the thread size of.
These cheap, disposable gauges will tell you real fast so that you don't order the wrong part
