Includes: 1 416 Stainless One-Piece Guide Rod & Plug 6 Shok-Buff Buffers 1 Extra-Power Firing Pin Spring 1 Extra-Power Heavy-Duty Recoil Spring (EP) 1 Reduced Power Heavy-Duty Recoil Spring (RP) SHOK-BUFF Recoil System; Great value for the improved performance it gives your 1911 style Auto; The full length guide rod controls the recoil spring to keep it from kinking, which means smoother, more reliable functioning and longer spring life; Original SHOK-BUFF recoil absorbing, poly fiber buffers prevent the slide from pounding the frame, giving longer gun life and softer recoil; Available for both Commander and Government/1911 GI models, the original WILSON COMBAT Recoil System is competition proven and the choice of champions!; NOTE: We Recommend using our #22 or #22P Barrel Bushing Wrench with this product