Stainless steel piston riding in a teflon sleeve smoothly softens recoil. Improves comfort and concentration for more accurate shooting. Adjustable friction spring lets you fine tune the dampening effect for heavy and light loads. Buttplate has a wide range of vertical and horizontal adjustments. Pad plate is drilled and tapped for standard recoil pads. Vertical and horizontal adjustments for drop and cast improve stock fit and increase shooting comfort. Thin, pad mounting plates prevent compression pinching and minimize amount of material to be removed for easier fitting. Rifle Recoil Reducer has a stronger compression rate to accomodate the punchier recoil of rifles, and guide pins and mounting screw holes are closer together to accomodate smaller rifle stocks. Also recommended for heavier recoiling 3' and 3½' magnum shotguns. SPECS: Aluminum, natural matte finish. 6-1?8' (15.5cm) high, 2' (5cm) wide. Adjustments - 1?' (3.8cm) vertical, ?l ' (18.2mm) horizontal, 360 degree rotation. 5?16' (7.9mm) stroke. Adds 1' (2.5cm) to length of pull. May require shortening stock.