I think you just need to get on their back in stock notification list. Another option is to figure out the part number, and google the part number. Sometimes you can find a vendor you have never heard of having one in stock. I have done this with discontinued stuff a number of times. Check e-bay too. there are some businesses who only sell on eBay.
Faxon has good stuff. Wish they had Glock Gen 5 conversion barrels.
