im looking to getting a new gun because im trying to do the vox solaris and i cant protect the drone idk if im too weak but im using the braton rank 23 rn
Maybe hold off on the open world stuff for a bit? Open world bounties are kind of a new player trap. That drone gave my group such a headache until much later in the progression - I think we were comfortably clearing Sedna stuff before we went back to Fortuna bounties.
The Karak might be a small upgrade over the Braton. There aren't very many good primary weapons available at that rank. I would recommend increasing your rank a bit. Once you get to MR8, you can use the Fulmin which should easily carry you to end-game.
The Sonicor secondary weapon might still be good but I am not sure how the nerfs have affected it since I last used it.
Ack & Brunt at MR3 is a decent melee weapon for early game.