Now, for a little context, L.G.R.B.C.s, or Lesser Gamma Ray Burst Cannons, are extremely powerful weapons that are used almost exclusively by the Karan, a race of religious automatons that wish to wipe out all life and matter in the universe to "cleanse" it. For those who do not know, gamma ray bursts are real life phenomena that usually happens when a high mass star collapses into a neutron star or black hole. Now, the G.R.B.C. is quite important to the story, and let me ask, would it be possible, how would it work, and what would happen if it was fired from an orbital assault?
Update: I just started my chatroom called The Council Of Devourers, for discussing the creation of my universe.
Update 2: The Council of Devourers is closed now. No further discussion shall occur.