Since Overframe doesn't have [Metamorphic Magazine] as an option yet, this is literally all you need, with 9 out of the 11 reserved for the augment.

You can go crazy and add forma to it to install more mods that do these things, but that's up to you. I deem it unnecessary as you already have an insane fire rate, and you're using this weapon to petrify the enemies and collect Rubble off them.