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6/2/2020 2:34:59 PM
Posted: 1/7/2003 5:02:41 AM EDT
How do you set, determine and check the correct headspace when installing a barrel on an
AR-15/M-16 receiver?
Link Posted: 1/7/2003 8:49:38 AM EDT
Use a headspace gauge. [:)]

You can't set the headspace.  That's the beauty of the AR.  It's determined by the bolt and the barrel extension, at the factory.  If the bolt & barrel are new you're good to go.  (But it's a good idea to check, just in case somethings out of spec.)
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