Thanks to the introduction of field mods, the AMX 30 B has overtaken the STB-1 to have the second-best DPM of the tier 10 mediums when built for maximum DPM. The 30 B now has 4,249.90 DPM whereas the STB-1 maintains 4,180.46. The K-91 improves its lead with 4,317.35.
Now, whether or not you actually want to run the 30 B in a max DPM setup is entirely up to you. I would suggest that you don’t. Hell, I’d suggest that you don’t play the 30 B in 2021 full stop. I just thought that was a neat wee fact.