The [Kuva Karak] in my opinion is a cool gun mainly because it looks like a gun from the classic 1st person shooter games. So I made a build which is based on CONDITIONAL damage. Personally there are a few changes I wouldn't mind making like getting prime [Fast Hands] or a riven . The reason i would like or use [Fast Hands] is because the reload feels slow compared to to the fire rate. Now the reason i want to get a reason is simple. The [Karak] has high disposition right now and it can be specialized. I would get a riven with damage, critical chance and reload speed and get negative zoom or puncture, something which doesn't affect the damage too bad. If you put in a riven I would get rid of [Heavy Caliber] since everything else is nearly essential. Besides the core mods I don't care too much how you put in your exilus or or arcane I just really liked those 2. If you like the weapon good luck and fair fortune, I hope this build helps you.