These complete hopup units are made from CNC machined aluminum and molded nylon. These offer superior rigidity and support to the precise hopup components. The gearbox interface on these have O-rings to help stabilize the hopup chamber. They include a SHS bucking that has a split nub that better centers the BB in the chamber. The adjustments on these have good holding force so they won't move from vibration or BB pressure. To gain maximum performance out of these (or any hopup unit) I would recommend shimming the hopup arm to totally reduce any play.
This product was added to our catalog on Thursday 24 April, 2014.
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