This guide details the installation and zeroing process for the Discovery ED-AR 1-6X24IR FFP scope on an M4 Carbine, based on expert instruction from Ranger Harold Cabunoc. It covers proper mounting techniques using specialized tools like torque wrenches and leveling bubbles, emphasizing safety and accuracy for civilian and hobbyist use. The guide concludes with range testing and adjustments for effective shooting up to 500 meters.
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