I train at a will/machado school. i just went on youtube to look up frontsweep instructionals and came up with only one by a couple of kids (it was actually very nice) its a basic technique so i'm guessing that in the greater bjj community its known by another name. i cant for the life of me think of what it could be. so a little help would be appreciated. its the over the head sweep to mount that the helicopter armbar comes from.