Super X3 Sporting Adjustable has a aluminum alloy receiver, nickel plated. Ventilated rib barrel; Perma Cote UT finish; Ported; Fiber optic front sight; mid bead. Gas operated with Active Valve system; 12 gauge, 2 3/4" chamber; ambidextrous safety. Satin Stock; Grade II/III walnut; fully adjustable comb. Features Chrome Plated chamber and bore; Five Signature Invector Plus choke tubes (LF,IM,M,IC,SK); Pachmayr Decelerator recoil pad; Molded red case.