As the first weapon picked up by a character at the start of a playthrough, the Kull Muckamuck is a minimalist sniper rifle with no special characteristics beyond its unique parts. It has damage boost and high accuracy at the expense of high recoil and low fire rate. It should be replaced as soon as the opportunity presents itself.
The Kull Muckamuck spawns with an entirely fixed set of parts and without any accessory.
Weapons with the same name can spawn but without any restrictions on parts, sights or accessories.