Modify Dobule H-Nub (2 Hardness, 2pcs/set for Tokyo Marui G Series / MK23 / VSR-10)

Modify Dobule H-Nub (2 Hardness, 2pcs/set for Tokyo Marui G Series / MK23 / VSR-10) Polymer Construction Suitable For Marui Model G/ MK23 Series Airsoft Also Suitable For Tokyo Marui VSR-10 Series Airsoft Sniper Rifle Designed to maximize the performance of your hop-up by providing more contact surface to your BB With two different hardness nubs The harder the nub the better it will perform with higher degree hop-up buckings and heavier BBs Equally, the lighter the nub the better it will work with lighter BBs and lower hop-up bucking degrees