This is the all new Benelli SBE 3 / M2 replacment stock set. This stock set comes with Black River Manufacturing patented SHOCK FORCE recoil system. This set somes standard with a RED stiff springs which are perfect for your 3 1/2 in shells and under. Their SHOCK FORCE system allows you to finally shoot inertia guns in comfort. This set also comes with their mid and flush mount cheek pads so you can customize it for the perfect fit. Two of their preimum sling mounts also come standard.image