Here is the email i got from them:
Thanks for your patience as we awaited word from ATF regarding the non-gun status of the M64 repair blank.
We have received approval of the M64 repair blank from ATF as a non-firearm.
The approval came with a caution that the combination of both the parts kit and repair blank may constitute a firearm. Because we have sold and are selling the parts kits, we cannot sell the repair blanks. The manufacturer of the repair blanks, Wise Lite Arms, has decided to sell the parts directly, as we are not going to be carrying the product. They requested that we send a notice to our customers stating the change of availability.
Attached is a copy of the letter from ATF regarding the part as well as a copy of an order form used by Wise Lite Arms. We have been advised that they will be selling the repair blanks for $179.99 plus $12.00 FedEx shipping for up to 3 pieces. They are currently in stock in their inventory.
All further questions and correspondence regarding the repair blank will need to be directed to Wise Lite at firstname.lastname@example.org or 940-433-8013.
Thanks again for your patience,