What is the ID tolerance for the portion of the upper receiver that accepts the barrel extension?
Some are tighter than others...
What is the ID tolerance for the portion of the upper receiver that accepts the barrel extension?
Some are tighter than others...
You won't outvote the corruption.
Sic Semper Tyrannis
1.000" +.002"/-0 for the first 1.110" +.030"/-0
1.000" +.006"/-0 for the remainder.
Is that just measured with a caliper?
You won't outvote the corruption.
Sic Semper Tyrannis
Here's you some reading material if interested. https://www.ar15.com/forums/ar-15/-/118-696919/
Not if you want an accurate measurement.
Bore micrometer:
Or, if you are less extravagant, telescoping gauges and an outside micrometer:
Oh, and the clamping force is nowhere near 10,000 pound as someone stated in that thread.
With properly greased threads the clamping load is 1,800 pounds to 4,800 pounds.
Last edited by lysander; 04-23-21 at 11:06.
Without properly gauging you don't know. The more guns you get to work on you can definitely start to notice differences.
You won't outvote the corruption.
Sic Semper Tyrannis
Bookmarks