It was seen in G1’s Microbots, where Perceptor shrunk to get inside Megatron's body and remove a powerful device from him. Changing size isn’t anything too extraordinary for Transformers thanks to thirty years of mass shifting, but thanks to size-changing heroes like Ant-Man and the Micronauts (and especially with Ant-Man becoming popular) this tech could provide a means to be used deliberately offensively. In fact, I wouldn’t be surprised if this tech provided a means to enable the Transformers to encounter the Micronaut realm.
It wasn't stable, though. I suppose it could have been weaponized but I prefer the idea that it was adapted and used to allow Transformers to scale themselves down to Micromasters in order to conserve Energon and avoid Nucleon usage.