Recoil Absorbing Butt Pad. Same pad that is included on all Phoenix Technology Tactical Stocks. This is not the KickLite® system but does offer relief from recoil on its own. Easily installs onto most AR/M4 style stock with included screws. (drilling required for installation) Engineered to take a bite out of felt recoil. A simple upgrade for added comfort. Adds approx 1" to length of Pull.