you can register flatline tanks on airgun's website.
http://www.airgun.com/agwarranty.shtml
on the "Type of Product Purchased" drop down,(its the last one in the drop down) click flatline then fill out the information.
you can register flatline tanks on airgun's website.
http://www.airgun.com/agwarranty.shtml
on the "Type of Product Purchased" drop down,(its the last one in the drop down) click flatline then fill out the information.