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Unread 12-17-2013, 11:02 PM   #15
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Dean Romig
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The Grade-7 barrels were likely fit to the gun after original production. An extra set of barrels when new would have been marked with the same grade as the gun and barrel set #1. Sometimes a lower grade set would have been used for the second set but it is highly unlikely that barrels intended for a higher grade would have been applied to the gun.
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