This's sniper build with decent firepower for short range for defense. Good thing is, that ballistic hardpoint on this Mech is realy high, so if u can see it, u can shot it. It's good in combination with advanced zoom module. U can change reactor for XL280 they have same weight, but I had this one. Other variant is to change Mlas and SSRM2 for 2xLRM5 and 2tons of ammo, but with this build u must be careful not to get in close combat. This build is also very cool, u don't have problems with overheating. I thing that more than 500 dmg for 55ton mech is good result.
Tried the 4x SSRM, 2x MLas, LB10 build first because it seemed like such a natural fit for this mech and ended up pretty underwhelmed with its performance. This build plays much better overall. Still haven't gotten completely used to taking quick shots with the Gauss but loving the slugs speed and range.
Here is one that I think is a bit more suited. Dropped one Med laser, some gauss slugs, gave it two more JJ's, shaved some armor, and give the engine a huge boost! Either way the build is good but I think 50 shots is a bit much for a match, especially if you are trying to not get killed by lights and others who wish to end your sniping rain.