As In Patriot Ordnance Factory??
I google'd it and is says "Pakistan" in there alluding to the fact that this is a subsidiary???
I saw one of their rifles the other day (upper/lower both marked POF USA). Looked like gas piston rig.
Just wondered what the dirt on these guys was
They make railed FF systems for ARs also. They also have been developing a piston driven AR upper.