SPG-9 is somewhat limited because of being recoilless.
SPG-9 is lightweight because it is recoilless.
The 73mm gun of the BMP-1 used essentially the same ammo with reduced propellent with better range and speed because it was a gun, but such a gun would create recoil and be rather heavier than the SPG-9 for only modest performance improvements.
That limits the round speed, which hinders both accuracy and range. Answer would be some kind of RAP I guess
The difference between the RPG-2 and RPG-7 was the sustainer rocket motor on the RPG-7 which transformed it into a much better weapon... a rocket sustainer motor to flatten the flight path and increase average speed would not be that hard or complex to add to recoilless rifle ammo rounds.
Of course unlike the RPG-7 you would have a full calibre rocket motor, so instead of gradually bigger rocket warheads being propelled by a 40mm rocket motor you would have a full calibre rocket motor.
Perhaps even develop a new 80mm rocket based on aircraft rockets and warheads, but of course their rocket motors ignite from launch and burn a few hundred metres and burn out... a shoulder launched version would be better to be blasted out of the launch tube and then not light up its main rocket till it has travelled 10-20m or so to protect the operator.
I do like the RPO-M launcher designed to be attached to various calibre disposable rocket types... perhaps a unified launcher system that you can attach disposable rockets of the RPO and MRO and the other types as well, with a built in ballistics computer and laser range finder to improve field performance without needing guided rockets... well perhaps add modified 80mm and perhaps 57mm rockets of the air launched variety as well as a small unified launcher for guided missiles like Metis and Bulat.
This is primarily for special forces and light mobile units... perhaps something built in to a bicycle or even tricycle for mobility.
IIRC the BRDM-3 was/is the incorrect designation for the 9P148 and that the BRDM-3 is a recce variant based on the BTR-82A?
Yes, you are quite right... for most of the cold war we had to rely on the west for such information and they were not that great...
Just impossible: Metis missiles doesn't carry a battery inside but receive the electricity they need to steer through the wire itself.
A modern battery could provide power and the space needed for the wire alone and the spooling mechanism that deployed the wire in flight could be replaced with the new optical system and a decent sized battery.
The Bulat is a rather tiny missile so it really can't take that much space for the tail mounted tracking system.
Compared with Kornet Bulat is rather small and compared with the 57mm grenade on the table it looks to be 65-75mm calibre maybe... it appears to mimic the design of the Kornet so yellow tip is a HEAT precursor charge, the gray is the rocket motor propellent, then the darker yellow is the main shaped charge, then the very rear gray bit is the electronics and control surfaces and rear looking optical system. The two nose mounted fins steer the missile... only having two reduces costs and complexity, but as the missile rolls in flight enables good enough manouver performance to hit moving battlefield targets...