I have a .223 Wilde 10.5", 8 twist, Medium Profile, carbine gas Odin works barrel on the shelf. Odin has a MOA guarantee. It's been mounted but never fired.
Originally this was for a pistol build, but I ended up going a different direction. I also have the KAC pistol buffer tube etc.
If you are interested in any of the above, PM me a reasonable offer, and we can see what we can work out.