 IOFS and IOFHS are the only two civil services under the Department of Defence Production.The type of ordnance material produced is very diverse, including various small arms to missiles, rockets, bombs, grenades, military vehicles, armoured vehicles, chemicals, optical devices, parachutes, mortars, artillery pieces plus all associated ammunition, propellants, explosives and fuses.Civilians are required to hold an Arms License (issued only for non-prohibited bore category weapons) in order to buy firearms in India.