In the late 41st Millennium, Conversion Beamers and Heavy Conversion Beamers are incredibly rare pre-Heresy technological artefacts, and their conservation and deployment is typically the responsibility of a Space Marine Chapter's Master of the Forge. The Heavy Conversion Beamer is even rarer in the late 41st Millennium than its smaller counterpart, as it was mostly equipped on the Contemptor Pattern Dreadnought and Deimos Predator Executioner vehicles.