GRS continued their vision of "no tools needed" on the Height Adjustable Recoil Pad option, the push button solution, ready to be installed on your GRS rifle stock. Made from hard anodized aluminum with stainless steel springs and screws. The full adjustment is 44mm (1.73") from top to bottom and can be set in 4mm (0.16") increments from zero to -16mm (0.63") and to +28mm (1.1"). GRS Height Adjustable Recoil Pad Set 100737