My lower receiver came back from Orion Arms and as expected, they did an excellent job. Here is a close-up of the engraving:
I'm still waiting on the Form 1 - I expect to get it in 2 or 3 weeks. So for now I will be usng it with my CMMG non-SBR upper. The reciver is made by TKS Engineering, Mesa, AZ and was purchased from Brownells. I liked the idea of a built-in trigger guard.
Here is what it looks like asssembled (without the upper):