Semi-automatic foreign-made grenade rocket launcher

Okay, I admit it.....the foreign-made grenade rocket launcher that doesn't need re-loading was laughable, especially at one point you could see that it was hollow and not loaded.
I noticed this first thing in the theaters back in 1985, but at the time I chalked it up to director trying to save time by not showing the re-loading sequences for obviously a single-shot weapon. But of course you see the insane paranoid Soviet operative Rostov quickly squeezing off several rocket grenades at successive suburban houses.

Question to military buffs: I thought I knew most modern military infantry
weapons. But I do not recognize that rocket
grenade launcher used by Rostov. Does anyone
know if it was patterned after a real military
weapon, or is it just a Hollywood prop invention?

Question: Does anyone know where that neighborhood was where Rostov and Nikko
blow up the suburb houses? Gosh, that middle-class suburban street
on a cul-de-sac looked completely authentic. Those houses looked
way too real to be cheap props that show only the front. I was
amazed. That one huge destruction scene surely cost huge bucks.
Golan and Globus were known to be economical on stunts but would
invest the bucks where a really spectacular stunt was called for.