[Shrapnel[Op-For]]

Shortly, my parent will be going on a trip to japan, but i am not sure where they will be spending most of there time. I was just wondering, is there anything in japan, airsoft wise, that i should think about asking them to pick up for me? Not guns, or things that cant be imported, but scopes, rails, (mags?) that would be a bargin, or hard to find here that would be a good idea to get. Thanks!