I was running a modified Stock Build with a Gauss but found it, despite CASE, to be way too fragile for my taste, as people would often aim for the Gauss Rifle and with a Stalker's big Side Torsi... so this Mech was born. The UAC gives me nice range and in a brawl a nasty punch together with the SRM 4. The ERLas is meant to harass along with the UAC, but either could be traded for an LBX and a normal LLas, with less heat buildup you can remove some DHS to free the tonnage. The MLas are the bread and butter/DPS weapons for your regular brawls/skirmishes.
Yeah, This is a perfect build. You have the more accurate SRM4, and the high DPS Uac5, and all at a heat manageable even on Mordor. 5-5