Heave Lasers and Pulse lasers. Both established technologies in the universe. This would likely either be both tech bases or Clan Only. The idea is Simple, increase the damage by 40% for each pulse laser while increasing the heat by 40% and in the case of hypothetical Inner Sphere ones 1.5 to 2 times heavier than a standard Pulse Laser. Also these get only a -1 to hit mod instead of a standard pulse lasers -2 and have inner sphere pulse/X-pulse laser ranges.
Stats below are WiP:
Small heavy Pulse Laser:
Weight: 1 ton(clan), 2 tons(Inner Sphere)
Crits: 2
Damage:7(+2d6 vs Infantry OR 7E/6B)
Heat: 7
To-hit mod: -1
Ranges(In hexs):0/1/2/3
Medium Heavy Pulse Laser:
Weight: 2 tons(clan), 3 tons(Inner Sphere)
Crits: 2
Damage:10(Clan),8(Inner Sphere)
Heat: 10
To-hit mod: -1
Ranges(In hexs):0/2/4/6
Large Heavy Pulse Laser:
Weight: 6 tons(clan), 9 tons(Inner Sphere)
Crits: 4
Damage:14(Clan)/13(Inner Sphere)
Heat: 15
To-hit mod: -1
Ranges(In hexs):0/3/7/10