"Enhanced with the Advanced Impact (A.I.) barrel system and A.I. Crio choke tubes, the Benelli Performance Shop Ethos Supersport A.I. Semi-Auto Shotgun takes auto-loader performance to competition-winning heights. The Advanced Impact barrel produces a more uniform and tighter pattern and up to 50% more penetration on target. More downed game, more dusted clays. The barrel is made using Benelli's proven Crio technology: each barrel is frozen to -300F to relieve stresses caused by hammer-forging and to create an even-grained surface with less resistance against wads and shot. The Ethos utilizes the Inertia Driven System that never needs adjusting and will cycle any and every shell from lightweight field loads to the heaviest goose-busters with absolute consistency. To handle recoil, the Ethos comes with the ComforTech 3 recoil reduction system. By splitting the stock diagonally and using shock-absorbing chevrons, the entire stock absorbs recoil not just the buttpad. The Combtech cheek-comb pad reduces facial impact and vibrations significantly. Other features include a carbon fiber-finish stock, nickel-plated receiver, red fiber-optic front sight, and metal mid-bead. Includes 5 A.I. Extended Crio chokes (C, IC, M, IM, F). Advanced Impact barrel produces tighter patterns 28"" Crio cryogenically frozen barrel Inertia Driven System cycles everything ComforTech 3 recoil reduction system Carbon fiber stock finish Nickel-plated receiver Easy-locking bolt system Red fiber-optic front sight and metal mid-bead"