Mossberg 500 Combo for field and home features include dual extractors, steel-to-steel lockup, twin action bars and anti-jam elevator. Includes two blued barrels, a wood stock and dual bead/beaded sights. The field barrel is 28 long, ported, has a vent rib and dual beads, while the home defense barrel is 18.5 long, has a single bead and a cylinder bore.