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AR15.COM
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3/25/2009 8:07:25 PM EDT
I have a M1A loaded stainless with the smith vortex, can i install the MSTN brake or the like on it?  Are the thread pitch/size the same as a AR10?  thanks
3/26/2009 3:12:42 AM EDT
[#1]
AFAIK, the M14/M1A barrel has a unique muzzle thread pitch.  The USGI barrel drawing indicates 0.595 - 32 NS - 3A pitch diameter 0.5747 " - 0.0027 ".
3/26/2009 8:06:43 PM EDT
[#2]
i take that as a no.  the brake MSTN makes for the .308 will not work?
3/27/2009 3:16:20 AM EDT
[#3]
Correct, the MSTN AR-10 muzzle brake is not machined for a M14 barrel.

http://www.thecountryshed.com/ar-10_muzzle_brakes.htm
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