I looked at them on Midway, looks interesting. Yes, that upper will drop right on, no problems.
The one I looked at had a rifle length gas system, which I think is a good idea. I dont think that a carbine length system would be smart.
I plan on having a rifle put together with a 26 inch barrel for my .22 Nosler.
Probably a 12 or 14 twist. I reckon I am only going to shoot the light bullets.
One nice thing about that AR Stoner upper is that is the same price as the barrel blank that I have now!
Pretty reasonable way to try something new!
If a whole new build though why not just go to the 22-250?