US Patent 9970722 Recoil buffer system

A recoil buffer system having a buffer element, wherein the buffer element extends from a first buffer element end to a second buffer element end; a shoulder extending from a portion of the buffer element; a spacer, wherein the spacer extends from a first spacer end to a second spacer end, wherein the spacer is slidable along at least a portion of the buffer element; a first recoil spring, wherein the first recoil spring extends from a first end of the first recoil spring to a second end of the first recoil spring; and a second recoil spring, wherein the second recoil spring is positioned between the shoulder and the first spacer end of the spacer, and wherein the first recoil spring is positioned such that a first end of the first recoil spring is abutted against and extends from the second spacer end of the spacer.