Enjoy using LB2X : Low heat generation. 20% less than a classical AC2. The spread is very low and you can use it at long rang. Don't forget the max rang of the LB2X (2500m). It's possible to shoot big target at 1200m and keeping a good amount of power and precision. The last, at the end of the battle, when the external armure are off, the critical chance bonus of LBX destroy components at a amazing rate!!! Especialy when you fire 6 LB2X at same time with a cooldown of 0.7 sec.
A bit too low on leg armor IMO, I think I'll get that ton back with skilltree. Love the build though, going to try it out over the regular AC2s.
I think you dont need heatsinks for this build 23 second at 16.6 DPS you can deal 380 damage before overheat.