Double H Hop Up Nub (2 hardness in one package)

This Double-H hop-up nub requires no modification (but easy if needed) to the hop-up arm, and is a drop-in nub for almost all the Tokyo Marui spec hop-up units in your GBBs, making it easy to give your airsoft replica a hop modification. Not to mention, it can be installed in four different directions and comes with two different hardness (70 deg. / 80 deg.) depending on what kinds of BB's trajectory you are looking for.