Looks like Thunderbeast is having trouble keeping up with demand. All out of stock at Silencer Shop.
That's been a pretty consistent issue with TBAC. Great product though.
FWIW, LGS chatter.
Guy beyond counter told me TBAC was having cans made by KGM.
Dead cans are made by KGM. . Serial number is KGM-xxxx
Next on my list of the KGM r6.5.