Click to expand Tap to zoom Mad Bull 60 Degree Normal Bucking Hop-Up Rubber Set of 2 by MadBull Save Liquid error (product-badge line 32): -Infinity% $15.49 SKU RB60 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart -2 sleeves and 2 regular-type buckings included-Soft type rubber for 350 fps or under