I have a Mark Chanlynn 30 cal 1-10" twist barrel for sale.
It's 31.3" long, 1.255" at the breech, .965" at the muzzle, has 6 lands and grooves, weighs 8.4 lbs and is cut rifled.
If you haven't heard of Mark Chanlynn here's a link with info about him.
Sold pending funds.
Thanks for looking,
Wayne aka WAMBO