Latest release from Tokyo Marui which is the AN/PEQ16 battery case which costs US$58 ... "Storage for an AEG battery is always a problem for the user with a custom AEG. The new release of the AN/PEQ16 battery case can answer this problem. The AN/PEQ16 has space for a battery without compromising the look for most AEHs. This can be mounted on 20mm rails and can hold MH Mini-S, Mini-S Cadmium batteries. It is available in black and dark earth colours."

Another product they plan to release is the rubber slide cover cover for rails, especially for railed M4A1s which will cost US$23 .