Just asking.... GNR Encore/Contender brakes
A friend who owns one was asking ME. How are they installed? I know they are not intended to be casually removed. No doubt they must be threaded to a fine pitch then red "Loc-tighted" or maybe even the green type (used for locking in piston sleeves in engine blocks). Finally turned on a lathe and final polish to integrate with barrel contour.
With the production numbers being pretty high and varied calibers, and since GNR was making his own cylinders, I figure they were all produced in house. Although if not that many were needed, they could have been contracted outsourced too.
I've never heard of one coming loose and in bright sunlight, you can sometimes see a install line on the "blue" versions in bright sunlight.