NRG...newt also told me a story about how he used to not sell this item to public but only to black ops type fellas. One day two showed up to his shop, asking to buy another even though he specifically said he will only sell you one. Apparently the guy who lost his could not retrive it from the cranium it had lodged in overseas, of course most likely some farm animal that was already dead. Should you have any ???s regarding the NRG and its design or design flaw or however you perceive it, give Newt a call and he will talk to you about it personally. If you want I will put the phone number up here ( I do not have it with me...day planner at the house) I think the frangible blade is nice, but I understand your righteous point.