Limbsaver Prefit Recoil Pads are easily installed after removal of existing stock pad. These recoil pads offer innovative recoil reduction technology that absorbs recoil and vibration through a unique three step process using a proprietary material NAVCOM. The superior Limbsaver recoil reduction system allows greater access to the shooting sports. May require minor fitting on some models. Mounting screws not included. Choosing the right recoil pad can prove quite difficult considering there are a number of choices when it comes to style, size color and texture.Notes: Fits all of the Collapsible stocks made by Magpul and MOE Fixed Carbine Stock. Does NOT fit MOE Fixed Rifle Stock or PRS Stock