Sukraniti while referring to fire-arms, (agneyastras) says that before any war, the duty of the minister of war is to check up the total stock of gunpowder in the arsenal. Small guns is referred as tupak by Canda Baradayi. The installation of yantras (engines of war) inside the walls of the forts referred to by Manasollasa and the reference of Sataghni (killer of hundreds of men) pressed into service for the protection of the forts by Samaranganasutradhara clearly reveals the frequent use of fire arms in the battle-field.
Hmmmm...who would have thought the 2nd Amendment has roots this far back in history....
