Complete hop-up unit M4 / M16 Guarder
Complete hop-up block M4 / M16 Guarder.
Complete high quality Guarder hop-up block, for replicas type M4 / M16.
Comes with everything you need to operate: knurls, balance wheel, 70 ° black Guarder gasket.
A good way to optimize the tightness of your hop-up unit as well as the sound quality adjustment and thus ensure more regular shots.
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