Department of Defence Production of the Ministry of Defence produce the equipment used by the Indian Navy and the other armed force.

As you requires I am here giving you list of guns used in Indian Navy.

Main Guns:
OTO Melara 127/64 gun (orders placed for 15 such guns in 2015)
A-190(E) 100mm
100mm AK-100 naval gun
AK-176-M 76mm gun
AK-76/62 76mm gun
Twin mount gun (76mm)
OTO Melara Otobreda 76 mm gun
Mk.6 Vickers 114mm gun
Bofors 40mm/57mm/60mm guns
Oerlikon 20 mm cannon (for Patrol Boats)
CRN-91 30 mm cannon (for Patrol Boats)

Air Defence Guns
AK-630 six-barreled 30 mm Gatling gun
AK-230 twin 30 mm gun
CADS-N-1 Kashtan