GRS ADJUSTMENT BUTTON & SPRING LENGTH OF PULL FOR BERSERK STOCK - SKU: GRS103162 After several requests GRS have developed the height adjustable recoil pad option. They have continued their vision of "no tools needed" and here it is, the push button solution, ready to be installed on your existing GRS riflestock. It"s recommended the installation be done by a gunsmith, as it"s important to get the function working optimally to ensure that quality is maintained. The system is made from hard anodized aluminium and stainless steel. The full adjustment is 44mm and can be set in 4mm steps from zero to -16mm to +28mm. Note: Recoil pad not included. Features: Hard anodized aluminium Stainless steel springs and components Can be fitted to all existing stocks, gunsmith installation recommended! 4mm steps Maximum height +28mm Minimum height -16mm