In late 1867 Tranter constructed a new, larger facility on Lichfield Road in Aston Cross, called "The Tranter Gun and Pistol Factory", although business continued to be conducted at the old location for some time. At that time Tranter's was the most extensive pistol-making business in the Midlands. Tranter produced over 20 different pistols of his own design, together with other designers' guns under contract. He had government contracts for the official British Snider Rifle, and in 1878 was granted a government contract for a solid frame .450 centre fire revolver for use by the British army. He supplied weapons of every kind to the gun trade in general, including overseas markets.