It's the Blood ASP from Mechassault 2 Lone Wolf. PLASMA CANNONS ARE BETTER.
Plasma Cannons operate by transferring large amounts of heat to the target, forcing them to flush coolant, be more careful about firing lasers and missiles, or even shut them down. Essentially, they're gigantic longer ranged flamers. The Blood Asp does not have those.
Plasma
PPCs are the stabby-looking charger rays the Blood Asp and Star Adder have, and they're crap. They do such little damage for that dramatic build up.
Then again, being PPCs, they shouldn't even need to charge up in the first place.