Necroblasters are energy-based weapons that were commonly used by the Sakaarans.
Necroblasters are a line of direct energy weapon used by the Sakaaran infantry. Necro rifles are the most common and reliable weapon in the Sakaaran's arsenal and acts as each soldier's primary weapon.
As Star-Lord attempted to flee the planet Morag with the Orb, Korath the Pursuer and a group of Sakaaran soldiers attempted to capture him and bring him to Ronan the Accuser. When Star-Lord made it to his ship, the Milano, Korath set up a large cannon-sized Necroblaster in an attempt to shoot down his ship.
Necro Rifles were standard sized Sakaaran weapons that fired directed bolts of a form of green energy.
A heavier version of the Necroblaster weapons, these cannons are mounted on a stationary base and have enough fire power to take down a small spacecraft.