The gun has the date of manufacture, names of the monarch and the technician along with verses in Persian moulded with floral patterns all over the barrel. The front inscription reads: "By the order of the Emperor, DuriDurran, Shah Wali Khan Wazir made the gun named Zamzama or the Taker of Strongholds." The longer inscription at the back eulogizes its bulk and invincibility: "A destroyer even of the strongholds of the heaven."
The firearm showcases a date of creation, names of the sovereign and artisan, as well as Persian verses with floral patterns on the entire barrel. The front inscription declares: "Authorized by Emperor DuriDurran, Shah Wali Khan Wazir, the Zamzama gun or Fortress-Taker." The rear inscription celebrates its size and invulnerability: "A powerful instrument capable of breaching even heavenly strongholds."