Replacing Your Hop-Up Unit & Inner Barrel

OptimusPrime

10 Jun 2021

Grace Airsoft has this 27-minute video showing you how to replace the Hop-up and Inner Barrel for your AR-style AEG... "Grace explains in a very long, drawn out and unsure way, how to replace the hop up unit and barrel on an M4/M16 style Airsoft AEG rifle."

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