Lots of options. The Perazzi MX2005 is available as a combo or unsingle. Extremely high rib. The Krieghoff Trap Specials are high, and so are the Kolar TA Max's. All feature a high rib and comb to keep your head erect. Also, Dennis DeVault (Devault Industries) makes an Infinity Ultra. The Infinity is a single barrel trap gun only (no combo). They feature a high adjustable rib, and Dennis will custom fit you to the gun. His stockwork and gunfitting capabilities are Awesome! There alot of options out there, with the new high ribs being the craze.
Matt - Woodson Ent.