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1/25/2018 7:38:29 AM
Posted: 3/31/2006 8:08:44 PM EST
If I use a rod down the barrel, with the bolt closed, can the barrel be accurately measured this way on an AR? If not, what is the correct method?

Link Posted: 3/31/2006 8:33:24 PM EST
That is the correct method on an AR. It's how ATF does it. Just remember to not include the flash hider unless it's permanent.
Link Posted: 3/31/2006 8:39:52 PM EST

Link Posted: 3/31/2006 8:44:23 PM EST
....and then subtract 1/4" just in case their coat hanger isn't "calibrated."
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