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Hopup LED module for Ultimate Hopup
The first mass production LED module for Hopup.
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You can change your Hopup chamber to be a tracer unit easily. (A MadBull Ultimate Hopup needed.) -
Hopup + LED completed unit
Compatible with all Marui compatible M4 series Airsoft AEG. The Ultimate Hopup Unit designed by Madbull
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Parts and Materials:
Metal body, includes a famous MadBull blue bucking (60 degree)
Tracer unit is optional.