A Reductor is a special tool used by Adeptus Astartes Apothecaries and Primaris Apothecaries to retrieve the crucial gene-seed of their fallen battle-brothers so that new Astartes might be raised from among their Chapter's aspirants.
Retrieval and storage of a fallen battle-brother's gene-seed is so critical that Apothecaries carry a special tool for this operation, often included as part of the Narthecium.
While a Reductor is not required for Progenoid removal, it significantly reduces the time.
Primaris Apothecaries carry an enhanced version of a Reductor that can also double as a close ranged weapon known as a Reductor Pistol.
The Reductor Pistol is similar to the Narthecium's Reductor tool but takes the form of a pistol and is used to both quickly retrieve and store multiple-sets of Astartes gene-seed on the battlefield.
The Reductor is designed to punch through Space Marine power armour quickly and cleanly; and can do much the same to the skull of a rampaging Ork Warboss if he gets close enough to the Primaris Apothecary.
- Codex Adeptus Astartes - Space Marines (8th Edition), pp. 65, 153, 155
- Warhammer 40,000 Munitorum: Narthecium (Digital Edition)