Limbsaver Recoil Pads have been used by more Law Enforcement Professionals, Tactical/Competitive Shooters, and Hunters than any other recoil pad. Limbsaver leads the industry in vibration dampening technology. This particular AR-15/M4 snap on pad is widely used due to the fact that it dampens up to 70% of felt recoil and muzzle rise while the rubber material adds for positive purchase in the pocket of your shoulder especially when using nylon gear and body armor.