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Measuring AR barrel lengths?

This topic can be found at:
https://sigforum.com/eve/forums/a/tpc/f/150601935/m/7630090694

November 07, 2022, 06:36 PM
PakRatJR
Measuring AR barrel lengths?
I'm working on a idea for a possible new toy and I thought I knew what was what with barrel lengths, but I'm scratching my head right now.

The rough plan is a dedicated .22 pistol but I want to use what I was thinking would be a 5" barrel.

Looking around I can find 4.5" or 7" and up but I guess I don't know what is actually measured at 4.5"?

For reference, something like this is what I was looking for, or at least something close enough to it for the length. I had the 5" idea measuring from the muzzle to the bushing.



And for the 4.5" that I found so far just looking around is this one.

https://www.midwayusa.com/prod...019824572?pid=970360
November 08, 2022, 06:37 AM
Chris Orndorff
https://blackrifledepot.com/bl...-of-an-ar-15-barrel/


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November 08, 2022, 04:01 PM
PakRatJR
Thanks Smile
January 14, 2023, 03:50 PM
dubagel
You measure from the breach/bolt face closed on the chamber to the end of the barrel. Not the end of a flash hider. Unless the flash hider is permanently fixed.