Hori has a sweet accessory kit on the way for Metal Gear Solid 3D.
The Metal Gear Solid Snake Eater 3D Accessory Set for Nintendo 3DS includes the following items:
Capable of holding the system, multiple cards and various accessories.
Stickers for customizing your 3DS into Metal Gear colors.
Covers for the system's top and bottom shells. (Note: the top cover can't be used when you have the system's Circle Pad expansion attached.)
Includes a strap. The pen can be extended between 70mm and 127mm.
The set is priced ¥2,981. Look for it opposite MGS3D on March 8.