There are definitely some weapons you can already to this with, yes. In fact, some early-game weapons are quite good at it, for example using multiple EM Shotguns will have that effect quite frequently, thus it's not too good an idea to use doorway bottleneck strategies with this kind of armament!
There could be additional unique weapons with this ability, though like other uniques they'd have to be rare/non-guaranteed (because the effects are devastating
), and those are situationally added as available spaces open up in the world.
