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Posted: 1/4/2002 11:58:04 AM EDT
I am unsure of the twist in my AR barrel. Whats a way to find out.
Link Posted: 1/4/2002 12:01:44 PM EDT
Put a tight fitting patch on a cleaning rod. Tape a flag of tape to the cleaning rod (which will be well outside the barrel).

Insert the patched cleaning rod and measure the distance with a nearby ruler that it takes the tape flag to make one complete revolution.
Link Posted: 1/4/2002 12:30:19 PM EDT
Most AR barrel twists are stamped on the barrel just ahead of the front sight fixture. Or at least Colt's are. >gg< Your mileage may vary.
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