In 1951 the US boasted of having “pin point accuracy” in a radio-control bomb called ASM-A-1 or the “Tarzon” (TAllboy, Range and aZimuth ONly)
In reality, while the accuracy could be within 500 feet of target (i.e. bridges in Korea), the complexity of the design made it unstable and costly to maintain. In addition the accuracy depended on daytime low-altitude flights, which greatly deflated chances of accuracy (at least two Tarzon exploded within the plane delivering it).
Fast forward, and not to be outdone, the Kalashnakov company has just announced a radio-controlled bomb called KUB-UAV