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Old 06-26-2010, 11:59 AM   #29 (permalink)
Angelballer
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Join Date: Jan 2009

It looks to me to a be a locating fixture to help align the two holes for the pull pin. Otherwise you have to push the stock back and forth until they align. Push the stock all the way up and then pull back so the wingnut is resting against the front of the mount. Insert pull pin and it is done. Clever but I'd rather have a nylock nut so once set it doesn't move.
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