This is a Limbsaver Recoil Pad known as the Recoil Pad, model 10025.
Get a stable shooting platform with this Magpul Stock Recoil Pad from Limb Saver" which reduces up to 60 percent of felt recoil and incorporates anti-muzzle jump technology for faster target re-acquisition. The recoil pad helps increase accuracy of follow-up shots and you'll enjoy increased control for maximum stability. Made from LimbSaver's proprietary NAVCOM technology (Noise and Vibration Control Material)" the Magpul Stock Recoil Pad effectively absorbs a wide range of frequencies to dissipate energy and vibration. Durably built to be used outdoors in all harsh environments" the no-slip surface stays in place" even in the rain.
Features:
Easy-to-install recoil pad helps reduce up to 60 percent of felt recoil increase stability for improved control;Fits Magpul MOE (synthetic stock)