From their retro line to the modern rendition of the Colt 4x20 carry handle optic, I'm really digging a lot of what Brownells has been doing lately. They're available in 10.5", 12.625", and 15". I just ordered the 10.5" version, should be here Thursday or Friday. I'm gonna pair it with a blem Aero stripped lower and upper I bought and will report back once it gets here.
https://www.brownells.com/rifle-part...rod124921.aspx