From
http://www.wwgreener.com/Shotguns.htm"Barrels - are made of the highest quality steel and bored to maintain the famous choke boring improvements, made by W W Greener in the 1870s, to optimise shooting performance, and to ensure patterns of shot guaranteed to meet customers' exact requirements whether for game, wildfowl or clay pigeon shooting.
A few pairs of guns are being made with interchangeable steel and Damascus barrels."I believe these came from old Greener stock rather than the Heuse Lemoine barrels found and sold by Peter Dyson
http://www.peterdyson.co.uk/cgi-bin/sh00...l%23aS629#aS629