Carrier assembly, NSN 8465-01-580-1319, for USGI/RFI-Issue MOLLE MultiCam Hydration System. Also falls under NSN 8465-01-641-9671 for "new OCP."
For the complete hydration system (with reservoir and drink tube) use NSN 8465-01-580-1316 (or alternative NSN 8465-01-580-1317).