I was trying a lot of builds with this mech and finally I stick to this one and it works very well (41 Matches, 58 Kills, average Dmg ~ 600) for me and my style to play. Use the LRM20 only if you are sure that the lock won't disappear and the target has no cover because you have only 3t of ammo. But if you use them wisely they can be very useful. Weapongroups: 1. Group: 3 Med Lasers 2. Group: AC 20 3. Group: ER Large 4. Group: LRM 20