I have a DH grade Parker with semi finished Parker barrels, from Frank Lefever and Son, also installed by them. I also have a set of Atlas barrels that I intend to install on some gun, some day. I am familiar with the Atlas-Vickers barrels and have seen no problems with them. Some of the installations have been very factory like.

The 20
 

Thanks Bill.
Information gathered seems to be favorable to Vickers.
Jim.......

A GH also with a 1964 date code
https://parkerguns.org/forums/showthread.php?t=15175


Vickers steel
https://www.doublegunshop.com/forums...&Number=177466