Looking to build a custom 10.5 - 12.5 upper

I’m trying to find somewhere online that can build an upper to the specs I have below. I’m not really picky on branding, I just want quality, and hopefully quality that is somewhat affordable.

10.5 - 12.5 barrel with low-profile gas block mated to a standard upper

That’s it, pretty simple, but I’m having trouble finding anywhere online with this specific build.
I’d love to build my own, but don’t have the tools or know-how, which by my figures would add up to way more than I’d like.

Any recommendations?

Try:

Robb “gotm4” -of VA Arms

Steve -ADCO Firearms

Grant “C4IGrant” -G&R Tactical