most rebates require a photo of the case label showing UPC and Model number the receipt does not need the S/N example from Taurus mag rebate "Upload a copy of the label from the firearm box containing the UPC and Serial Number." https://tauruspromos.com/Claim?promoId=1633

Hi Glen and welcome. Your FFL should have gave you a pink copy with the Serial Number. Click the View Order button of the order in question here: budsgunshop.com/account_history.php ---------------- Then click Printer Friendly Version to print or Copy. There is also a Serial Number on the firearms box as well. The reason I state this is that you do not own the firearm until you do the paperwork at the FFL and the firearm is transferred to you. You paid for it, yes, but not yours just yet. Cheers, stay safe and enjoy!

Hi Glenn, call Bud's Customer Service at 1-859-368-0371 9am-8pm EST Mon-Fri.
Also, check to see if you can use your paperwork from your FFL, which will have the serial number.
Stay safe & have a great day!