Guns: 
Bod is overall my favorite it just does crazy damage and synergizes very well with 
Critical Funding. I recommend getting an SMG underbarrel for bosses, and a Sniper for mobbing, but they are more or less the same, any roll will work fine. Make sure to NOT use one with a CoV mag as it won't work with Critical Funding. If you get torgue stickies that is very good for boss dps too!
Feel free to use anything you want for mobbing but I doubt anything is better than the Bod tbh
Complex Root with atlas tracking darts is extremely good for bossing as well, but can be inconsistent at times and doesn't feel great for mobbing
Kaoson is another good boss dps option
Shield: Theoretically anything works, but I like the 
Watts 4 Dinner, especially paired with AMP Synergized if possible, paired with Siphon Tolling would be perfect.
Repkits: I like using 
War Paint with enrage for extra damage, can use anything with 2 charges if boss farming for 
Now With Caffeine
Class mod: 
Bio-Robot with +3 into 
Sustained Reaction and ideally some points into 
Feedback Loop.
Alternative you want a 'Savant' purple class mod as this rolls with points into 
Control Group, that is the only reason we use it, try to get one with as many points into Control Group as possible
technically the savant can be BiS because it can roll 3 passive increased damage effects such as gun damage, gun specific damage, kinetic damage, or even action skill duration, while the Bio-Robot can only roll 2, but it's much easier to obtain. On the bio robot try to just get action skill duration.
Enhancements: Prioritize getting additional gun damage, and keep in mind the Bod counts as all weapon types! Gun damage on enhancements are multiplicative, so if you get gun damage + sniper damage, that will boost your damage by over 50% which is pretty insane. Fire rate and mag size help out too! Ripper/Torgue enhancements can be good as well if your Bod rolled with a part from them, but again just prioritize damage.
Item Locations:
Savant Class mod = world drop, best farm is splashzone or drill sites
Watts 4 Dinner = Origo, Terminus Range, Arch of Origo
Bod = Axemaul, Auger Mine, Carcadia District
Complex Root = Mimicron, Order Bunker, Idolator's Noose
War Paint = Saddleback, Ripper Drill Site, Cuspid Climb
Bio-Robot = Idolator Sol, Fortress Indomita, Idolator's Noose
Harlowe
Flux Generator
Nuclear Winter counts as action skill damage, enabling all sorts of interactions such as 
Excited State guaranteeing critical hits on every single gun shot, infinite ammo via 
Distribution Function, and TONS of gun damage + reload speed + rate of fire with the 
Group Study capstone
