Gluttony 2 is a Custom Part item for Resident Evil: Revelations. It is unique to Raid Mode.
When ammo in your weapon is depleted, it will start using ammo from your other equipped weapons - only compatible with shotguns.
Random drop from any Illegal Custom Part in the Ghost Ship.
- BIOHAZARD REVELATIONS UNVEILED EDITION Official Guide. Famitsu. 2013. ISBN 978-4-04-728961-1.