Hello, this is my actual build for the Atlas D-DC, is very simple, based on a AC20 as main weapon, it can make good dmg at medium and short range, then i can bring to use the paired 2mpl+2srm4 into brawling, the LRM15 gives me the possibility to atack targets out my line of sight as i make my aproach, or help my team to keep pined some enemy while flanking. Contrameasures, now ECM is a must on any D-DC, the AMS is for that moments when you ecm is disabled and missiles are raining, the STD325 doesnt count as countrameasure but an extra speed is always usefull. Weapons Group: g1= 2mpl+2srm4 g2= Ac20 g3= Lrm 15. Note: i play with Joystick+mouse, that gives me easy acces to fire any weapon group, for better heat controll you can set the mpl and the srm in different wg.