Well, I decided against the BRN-180S upper...

Not that it is a bad product, but with Black Friday, I got mostly all of the components for a piston AR pistol build for about the price of just the upper. 11.5” Adams Arms upper, which I’m familiar with the AA design from my original AR build.

Did a SBA3 with a traditional buffer tube setup... and likely getting the SplitFix. OAL might be close to allow a vertical grip... which I may do.

I did grab another stripped lower, so might be a project down the line... but rather get a short AR pistol into my truck sooner rather than later.