You cleverly skipped our massive ship building industry, our capabilities in Radar and EW system development. Our navy currently has more that 40 ships under construction within India. 7 more P17A frigates have also entered production + construction of 16 ASW shallow water craft will soon enter construction phase. Also deal for local manufacturing of Grigorovich class frigate was also signed today.
Also we can locally produced helicopters. India currently operates 200+ locally made Dhruv. Order for 80 more were placed by Armed forces in last two years.76 Rudra are also on order. LCH has also entered production this year and we will produce 169 of them. LUH which had its first flight two years ago is expected to be produced in numbers exceeding 300. HAL has started working on 12 ton IMRH helicopter which is expected to fly in next decade.
As for fifth generation fighter jet we already have AMCA program. We have already started working on avionics of AMCA. Mission control computer is under development as of now.
Here is DRDO developed Ultra Wide Band (ULB) Radar Absorbing Skin Prototypes
AMCA basic simulator for testing flight control software.
There was also a video showing testing of internal weapon bays for AMCA but the video was deleted by YouTube.
In missile tech we already have capability to develop different types of seekers including the miniaturised ones.