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The SHS Polymer Rotary Hop Up Set is the perfect solution for those looking for a hop up upgrade in picky guns! This set includes everything you need to assemble the unit as well as a replacement bucking!
Almost identical in concept to the infamous Prowin hop up unit the SHS has the added bonus of being polymer. This can actually be a good thing for guns as it provides a little bit of flex and wiggle room for guns picky with magazines or feeding.