Beretta’s new Kick-Off hydraulic dampening reduction system reduces recoil an astounding 44% more than its closest rival by using two hydraulic recoil dampers incorporated into the stock spacer unit. The recoil energy is gradually dissipated by the hydraulic dampers, resulting in superior comfort for the shooter. Fits to Xtrema 2 and Urika 2 , synthetic stocks only. Beretta Kick-Off System Xtrema C87927