From DoomWiki.org

Under construction icon-yellow.svgThis article or section is a stub. Please help the Doom Wiki by adding to it.
The hellshot.

The hellshot is a weapon in the 2016 Doom game which is exclusive to multiplayer and SnapMap. It is an advanced energy weapon which utilizes Argent energy to fire red-coloured, plasma-like bolts. The hellshot is a semi-automatic weapon of moderate accuracy and firepower. Its alternate firing mode launches incendiary shots that can set targets ablaze and inflict burning damage over time. Due to being an Argent-fed weapon (like the BFG), the hellshot is presumably an in-house UAC weapon development product.

"An advanced semi-automatic energy weapon."
SnapMap description