Internal core unit for either the MIAD or MOE grips designed to hold two (2) AA type batteries in a self contained waterproof unit.
Included internal spacer provides rattle free storage of either (2) AAA or (2) N size batteries (commonly used for EOTech sights).
Rubber cap has two sides with marking to identify "spent" batteries and can be opened with a push of the thumb.
Made in U.S.A.