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Airsoft Masterpiece Brass Hop-Up Unit
The BEST hop-up unit money can buy. Ask anyone, they will all say the same.
Adds stability if used with an after market guide rod due to the protruding rod of the hop-unit.
Holds hop incredibly well after thousands and thousands of shots.
A needed upgrade if you want to get the most out of your capa.
Includes: hop wheel, hop arm and the unit itself.