canada buying weapons

Hi, I have purchased foam nunchaku from china (through china air mail) and received it successfully in the past without any problems into Canada.



I saw these on AliExpress: http://ift.tt/1qjAiTa



and am wondering if there would be any problem during security check or customs?



I don't want to have any problems with them, so if they are not allowed, I won't buy them.