Mine has been back to the factory twice. First time it would not feed right out of the box, sent it back, fixed and back in my hands in 2 weeks.
Second time, there was a small crack in the frame. Para replaced the frame, no questions asked, but it did take about 4 months. I think it was due to some disorganization at their shipper/receiver.
No issues since.
Otherwise, I enjoy it. Mine has the alloy frame.