Which Weapons can a commando use ?

What Heavy Weapons can a commando use, and what are the perks of using them?

Commandos can use every Heavy Weapon currently in the game. All but those noted are commando-only weapons. The list is divided for Directional Fire, Ground Fire weapons,

Commando Rifles:
Directional Fire (Cone AoE)
CL72 - Flame thrower (General Certification)
CL75 - C-M Fragstorm Shotgun (General Certification; Restuss Loot)
CL80 - Plasma Flamethrower
CL88 - Heavy Republic Flamethrower V1-5 [Cube Loot]
CL88 - Malevolent Flamethrower [Loot]
CL88 - Oppressor Flamethower [Loot]

Ground Fire (Radial AoE)
CL1 - Nickel Plated Targeting Pistol (General Certification; Publish Gift only)
CL48 - Launcher Pistol (General Certification)
CL56 - Heavy Acid Rifle
CL56 - Rocket Launcher
CL72 - The Void Rocket Launcher [Loot]
CL75 - M-XX Heavy Rifle [General Certification; Restuss Loot]
CL80 - Blackscale Acid Launcher [Loot]
CL88 - Lava Cannon V1-5 [Cube Loot]
CL88 - Devastator Lava Cannon [Loot]
CL88 - Devastator Acid Launcher [Loot]
CL88 - AK-Prime Rocket Launcher [Loot]



Commando Rifles (Non-AoE, function as rifles)
CL64 - Heavy Particle Beam Cannon
CL64 - Corellian Destroyer Lightning Beam Cannon [Loot]
CL72 - Acid Stream Launcher
CL80 - Lightning Beam Cannon
CL80 - Proton Rifle [Loot]

The Perks of Heavy Weapons are commando-specific:
Heavy Weapons do not have action costs
Commandos can get devastation attacks in addition to our critical shots, which bumps up damage and DOTs by 50%
Commandos gain a HEAT, POISON, and ACID DOT from HWs
Misc Notes about Heavy Weapons:
Heavy Weapon Damage is similar to every other weapon except for the DOTs they produce and their higher overall Elemental values
Damage abilities are not useable by Heavy Weapons, exceptions are Heals, Mines and Certain Expertise abilities .

Commandos can swap weapons to stack their DOTs to output the maximum damage
A maximum of 3 DOTs can be placed on a PvP target
Never underestimate the power of DOTs, but do not rely on them only
What is the radius of ground-fire Heavy Weapons?The radius is 6 meters.

What's the best Heavy Weapons to use?
(Taken from Starnick's original FAQ) For a CL90 commando, it is generally accepted to either use the Lava Cannon (or variants) or AK-Prime Rocket Launcher. The Lava Cannon is energy-damage and the Rocket launcher is kinetic, so its up to you. Both produce fire DoTs. Also, an acid launcher such as the Devastator Acid Launcher is a good weapon to use for its acid DoT and since its similar to the Lava Cannon and AK-Prime Rocket Launcher in damage stats. To attain a third DoT, most commandos use the looted rocket launcher "The void" or the Restuss Heavy Rifle.