The MIAD/MOE Lube Bottle Core is an internal grip core that holds an included 1/2 ounce reusable lubrication bottle. Comes standard with the MIAD GEN 1.1 Grip, the Lube Bottle Core also works with the MOE and MOE-K2 Grips. Not compatible with the original modular MIAD grip (MAG050). Made in U.S.A. E.A.R. Export Administration Regulations Controlled Product.