Sorry, I thought you had one already.
I looked at the BR, they're short on specs but it looks pretty good and you're desperate. This is a tough time to find a milspec BCG and ROGTAC will treat you right so let us know what you think of the BR. I'm not expecting any trouble but I do think we're talking snake oil and country club BCGs.
By great specs, I'm thinking of what BCM publishes (below) and wonder why the "upscale makers are so silent when it comes to specs":
•Milspec Carpenter No. 158® steel
•HPT Bolt (High Pressure Tested/ Proof)
•MPI Bolt (Magnetic Particle Inspected)
•Shot Peened Bolt
•Chrome Lined Carrier (AUTO)
•Chrome Lined Gas Key
•Gas Key Hardened to USGI Specifications
•Grade 8 Hardened Fasteners
•Key Staked Per Mil-Spec
•Tool Steel Extractor
•BCM Extractor Spring
•Black Extractor Insert
•Mil-Spec Crane O-Ring
The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together. You'll remember the quality of a gun long after you forget how much you paid for it.
US Army 1966-69, VFW Life Member, Retired Geek