A friend of mine loaned me one back in the late 1970s...that was THE fastest shoulder rig ever made for a long barrel Smith. It had a very interesting attachment strap to the belt...it was very wide, kind of tear drop shape. The holster was made to ride very low with the cylinder just above the waist, not way up high with the grip under the arm... The rear attacmnet strap was meant to take the weight, not the shoulder straps..

I believe the original company who made the holster was Cattle Barron Leather who then went out of business and then Lawman started producing the rig...or it was the otherway around. The second company also did the holster in black and was called the Marauder...was even made for 1911s.