I designed the bolt and it is being made right here in Missouri out of S7 tool steel. We used several PTG actions in our proof of concept stage though. It is essentially just a 40X clone optimized to run from our magazines.
Testing? Did someone mention testing? As my son will attest, when it comes to testing, I can wring out the worst of the worst. I am tough on equipment. So, if you need to see if it works, give me a call, I’ll find your issues soon enough.