The Xtrema2 was released in mid-2004, to answer the call from hunters and target shooters for a complete do-all shotgun.
They also wanted to add as many recoil reduction features as possible to the shotgun to increase follow-up shot accuracy while target shooting and hunting.
They then also chose to take the time-proven technology of hydraulic shock absorption from car-manufactures and put it in the gun's stock for up to 44% felt recoil reduction at the shoulder.
Beretta's answer to this need was to coat the gun's working parts in a micro-thin membrane which completely protects the metal (which are not made from stainless steel, chromium, or aluminum) from corrosion while out in the field.
Synthetic stock equipped with the KO (kick-off) recoil reduction module adds about 1” to the overall length of pull (LOP).