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Old November 14, 2012, 08:58 PM   #21
Senior Member
Join Date: January 17, 2008
Location: north platte nebraska
Posts: 333
SHR I am sure your guns are in good working order. But you really don't have a firm understanding of how a pump gun works. The forearm needs to move forward before it can move backward. The trigger does not unlock the bolt. In your experiment it sounds as the bolt is unlocking during the rebound.
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