For good emode operation, the length of the plunger is more important than the trigger rod. This is where the calipers come into play. Too short and the solenoid won't have enough power to trip the sear in all instances. Too long and the sear rubs the bottom of the bolt or doesn't release the bolt at all. Depending on your trigger setup, the trigger rod may differ from the spec setting. Just make sure the that the trigger rod does not make contact with the back of the trigger when the trigger is held against the emode trigger stop.
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