I'm not sure if they are even being made anymore. Navy Arms had a couple different BP 12 ga db-bbl's with the side hammers.They had a light weight model that kills on one end and cripples on the other. It was way to light. Then they had the Magnum model.I sold the light weight and bought the Mag model.Knight also makes a single bbl 12ga.Model TK2000.

Ruger Redhawk