(54 Bore) 1856 Revolver

The (54 Bore) 1856 Revolver was a firearm obtained by Jacob and Evie Frye during the nineteenth century. The model was particularly well-known for being sneaky and easily concealed. The Frye twins received this weapon as a gift from Sergeant Frederick Abberline after they helped him lock up several Blighters.

Reference

 * Assassin's Creed: Syndicate