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MEkovich · March 26, 2013, 01:21 PM

The 520 has an "inertia block" that moves as a result of the recoil of a discharge, just dry firing won't do it. You can "fool" the action into moving by holding the gun vertically by the forearm and jerk it upward. Now you should be able to rack the slide. Mine wasn't doing this.

March 26, 2013, 01:21 PM	#6
MEkovich Junior Member Join Date: March 25, 2013 Posts: 5	Model 520 Pump The 520 has an "inertia block" that moves as a result of the recoil of a discharge, just dry firing won't do it. You can "fool" the action into moving by holding the gun vertically by the forearm and jerk it upward. Now you should be able to rack the slide. Mine wasn't doing this.