Those aren’t going to be very helpful. The SA-7B is equivalent to the US Redeye missile, which had a lot of problems. Both are pretty myopic and aren’t terribly effective against fast movers. The warhead is also small and is known to be able to be shrugged off by Russian armored choppers.
The MG3s would be more useful, but there’s no note that they’re coming with ammo. Ukraine doesn’t have stocks of 7.62x51 NATO ammo - their logistics for GPMGs are centered on the 7.62x54R cartridge, which is not compatible at all.
Plenty of slow moving targets. Wouldn’t want to be Russia right now.
50% estimated non-functional, aged junk
Empty out stockpiles of old obsolete weapons.
I would not dare use this junk as a primary. Big flash, lots of smoke, narrow engagement field, high probability of being defeated. This is old-old tech. If I'm risking my life, I want a chance to actually hit and take something out.
https://www.youtube.com/watch?v=FzO-s9PqpeE
***I would ONLY use this as part of a SAMbush.***
Set one/two of them up to make him react, and then send up the more lethal newer Stinger or SA-18/Verba with a good shot once he turns towards the SA-7 to evade.
My opinion, but I'm not an ADA guy. I'm just a has-been ground pounder.