Hawes 45 Colt barrel
https://www.gunpartscorp.com/products/81290E
Redhawk Hunter barrel
https://www.gunpartscorp.com/products/1553530
30" Octagon 45 cal barrel blank $61.25
https://www.gunpartscorp.com/products/584510
no picture.
EMF 7.5" 45 Colt barrel $41.50
https://www.gunpartscorp.com/products/1560290