This one is nasty weapon for soldiers covering in houses, if the Hamas has large number of thes expendable fire and forget rockets, i expect that casualties among nazi invaders expnonentialy grow as they are becoming more and more static troops entrenched in houses and buildings.The Al-Qassam Brigades targeted a special Zionist force barricaded in a house on Old Gaza Street in the Jabalia Al-Balad area for the first time with an RPO-A anti-fortified missile, which led to the killing and wounding of all the soldiers holed up in the house.
Here are some info about russian system
RPO-A Shmel - Wikipedia
en.m.wikipedia.org