For my last chapter in this story:
The barrel package was scanned in on Tuesday as being delivered to my front porch/door. No package at my house/mailbox. Not the first time the USPS has messed up at this house for me with a firearms part(s) package. Phone call made to local office, managed to get the main supervisor, found out the scanning was GPS'd at another house on a different block in my neighborhood. Obtained the address (different house number/different block) and asked the occupant if she had found my package on her doorstep. No was the answer, relayed that the next day to USPS office, and they were going to do whatever they do to retrieve said package.
Needless to say the package mysteriously arrived in my mailbox, slightly opened on one end, but everything was fine inside. Package was a SFRB, so it was easy to see if it was opened up.
Barrel installed into slide, everything put back together, and the B6 functions just as it did previously performed safety checks, without being able to live fire. I have no reservations with the new barrel being able to perform just like the original.
As jwc007 said, the SAR firearms perform above their price point.