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Old December 21, 2018, 06:07   #1
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Flash hider positioning washer sizing

Im sure it has been answered here once before but I can't seem to find it in the search function.
As you increase marked sizes on a L1A1 flash hider timing washer how many degrees does each incremental size add?
I understand I can buy the thickest one out there and sand it down but would rather buy a correctly sized one.
Each incremental size looks to be about .0018 additional thickness. How many degrees does this add to the rotation of the flash hider?

Thanks for your help
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Old December 21, 2018, 06:46   #2
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IIRC, whole numbered sizes (1-11) are 30 deg / 5 min; the half-sizes (1a-11a) get you into the middle 15 deg increments. But that's really just a starting point, never know what crush the muzzle and washer will allow.
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Old December 21, 2018, 08:17   #3
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T. Mark Graham, Master Gunsmith
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