I have a .30 cal 9/16x24 thread pitch YHM suppressor mount along with a 5/8x24 thread adapter. It was on a 6.5 Grendel I have. I honestly don't know what suppressor will fit it cause I have an AAC can.
I don't know what they are worth, but I know I spent about $4 on the 5/8x24 thread adapter.
$45 shipped obo ??