This is a worst case scenario:
Hopefully you have your SN and proof of purchase. The receiver will need that to release you weapon to you. Otherwise, it will be sold to pay creditors. They are not going to ship it to you, you will have to go get it or hire a freight forwarding company to pick it up, pack it, and ship it to you. Since the FXUSA is in receivership and is under the control of the courts, FX Sweden has not say in what happens to inventory on hand, this includes weapons there for repair.
I hope this does not come to pass. I saw a similar occurrence here when a car repair shop went into receivership. The court appointed an individual to liquidate everything to pay debtors. Anyone having a car there or who had ordered parts via the defunct dealer had to show proof of ownership or a receipt where they had paid for a part. No problem on ownership, they just showed their vehicle registration. Parts was another story. Many folks could not prove payment for ordered parts and they were liquidated by the receiver. I wish everyone who has a weapon there, who has ordered and paid for parts and who has purchased a new weapon from them, the best of luck.