GAR-D "Garbage Gary" (1x cUAC20, 4x cER-ML, 2x cER-SL)

This build's cUAC20 recieves a -20% bonus to cooldown and jam chance and a +10% to ballistic velocity. The arms also get +26 armor which is nice since one houses your main weapon and the other is your shield arm. The cER-MLs do enough damage to be effective backup/support weapons and are also mounted higher up making ridge peeking at least possible but they tend to be quite hot in combination with the UAC. The cER-SL are completely optional though. Feel free to throw them out for an extra ton of whatever-you-want.

If you like LB20s better go with the prime arms.