To explain our side
Wolverine Supplies was working to find the sling stud for our customer. We admit it was a long process. We are part of the dealer network selling Kel-Tec products in Canada, and for this reason, we were trying to work with the importer to find out the availability of the front handguard sling swivel. In the mean time, Kel-Tec addressed the problem directly as the OP has indicated.
Rest assured that we were trying our best to assist our customer. To the best of my knowledge, none of the RFB we have seen come through our doors have contained the front sling swivel.
Make no mistake our warranty policy is as plain and simple as it reads. We try our absolute hardest to take care of our customers.
If there are any additional concerns with anything purchased through Wolverine Supplies, I ask that everyone please feel free to contact the store either by phone or email. I believe that our customer service and support will speak for itself.