You could probably argue that from historic context, this was most likely firearms and swords/sabres or the like, as smaller knifes were unlikely to be regulate

You could probably argue that from historic context, this was most likely firearms and swords/sabres or the like, as smaller knifes were unlikely to be regulated in the middle of the wilderness and east-Asian weapons were probably unknown/unlikely to be a concern. However, I am not an expert on your curious rules regarding the interpretation of laws, so I might very well be wrong.