What about weapons on Co2 (Walter P99 RAM for example) in Japan. Can i buy it without any documents?? In lots of western countries you can buy it when you finish 18. Secutiry comapnies use it, even police in prevencion units. It cant kill a human, most likely used for fun.

I'm not familiar with firearm legislation or joule/fps requirements and restrictions in Japan. But airsofting in Japan is quite big,heck it is were airsofting orginally created. Many reputable Japanese companies manufacture airsoft weapons such as Tokyo Marui.

But from what iv gathered, Japan was a joule limit of 0.98 joules. Anything over this amount will require a licence and classed as a firearm.

So from the sounds of your post and the 'Walter P99 RAM' that you mentioned, yes you would need documents to obtain such a thing and I would say obtaining such documents in Japan is hard in general and probably even more so for a foreigner.

Wow your so knowledgeable, im impressed Thx for answer.