Found. Operation parts finally got one in stock.
https://www.operationparts.com/knights-armament-piston-assy-mk23-suppressor-m16x1-rh-tpi/?utm_source=instocknotify&utm_medium=email&utm_campaign=instocknotify
Good luck lads got one just a few mins ago. 1 left. This is for those who have a knights usp suppressor but would like to swap it over for use with their mk23...
Hurts my head to read that and clearly sig wanted to move them. I really don’t underhand their reluctance to sell and work with you. Was there just not enough meat on the bone for them?
Yes I’ve seen them before and it’s so amazing what was done with by todays standards is crude manufacturing. The select fire models have a very interesting cyclic rate if I recall correctly.