Short .300 whisper barrel or upper assy

[JFettig]

I'm primarily looking for a barrel, would consider an upper.

Something between 7 and 14", preferably around 10-12" long.

If I can get a chambered barrel blank, I can do the rest of the work myself.

I'd consider an upper for a good price.

I'd also consider a longer barrel with a gas port in the pistol location or no gas port.

I have a pistol lower that I made from a 0% that this is going on, no SBR stuff here. Also, it'll be for supersonic primarily.

Thanks,
Jon