Who cares about the Piranha, its all about the Black Lanner!
https://mwomercs.com/black-lannerPrime - ecm head, 2 energy left arm, 1 energy right arm, 1 missile each side torso
A - ecm head, 2 energy left arm, 1 energy right arm, 1 energy left torso, extra ams right torso
C - 6 energy left arm, 1 missile right arm
D - 2 energy 2 ballistic left arm, 2 energy 2 ballistic right arm, 1 energy 1 missile left torso, 1 missile right torso
E - 1 missile left arm, three energy right arm
No B config but Hero 'Mech starts with B - Bellonarius - Streak SRM 4 in each side torso, supported by three machine guns in each arm, Heavy Medium Laser in left torso, Heavy Small Laser in the head. Two ton streak ammo, four tons machine gun reloads. Hard points match the above.