Blow shit up and feel invincible
This build consists of using grenades a lot to keep yourself alive, and having large shields to boost up survivability. Throw a couple of Hex grenades into a crowd, and use your favorite explosive weapon to kill them off! The Hex will keep you alive, so just have fun shooting the enemies! This build is very practical and has been the most fun build in my opinion!
Unfortunately, since Iron Bear is kind of weak in endgame, you can use any weapon and augment combo you want. In the future if Iron Bear gets an endgame build or rework, I will update this.
This is the class mod I use, and a similar class mod is what you will want to find. The skills on the one I have are what you want to aim for, but the ability for shields to be healed is necessary for this build.
This is that artifact I use, and a similar artifact is what you want to find. The slide speed is a very great bonus, and a lot of fun, but the necessary part is the 100% shield and reserve 1 HP.
There is only 1 required weapon for this build, and it is the Hex. (Even post nerf) The Hex is going to provide you with a fuck ton of healing if you throw a bunch into a crowd. Without it, this build is no where near as strong. The constant healing from the Hex is going to make you into a god. A MIRV or Cloning Hex is recommended, and if you are lucky enough to get it, the Recurring Hex is amazing. A highly recommended weapon for this build is the Flakker, as it does a ton of explosive damage and will provide a good source of grenade replenishment. After the nerf, the Jericho on Mortar mode is much better. Spam grenades to keep ammo up. The other weapons are personal preference, however you should be using Torgue/explosive weapons. I personally use the Bearcat, Laser-Sploder, and the Skeksil in my other 3 slots.
Any shield will work for this build, as long as it has high capacity. My rule of thumb is just to use the highest capacity shield I can find!
You should have them all maxxed out, but go max out your grenades at the very least.