I have no extraction or ejection issues with the few rounds that I shot
The first couple thousand rounds I shot thru my .22LR didn't cause any trouble, either. Then, things went sideways.
The WMR was always problematic, especially with Winchester or Aguila ammo, which is a bit hotter than CCI or Hornady, apparently, as I never had trouble with those two brands of ammo.
I gave them to a couple of nephews, with instructions and boresnakes.
