It was a prefit. I called up Proof to see what they could do. They have excellent customer support. They want the barrel back to see what went wrong and they are going to get a new one sent out once they have a batch done. Only 3-4 week wait so not too bad. I have not been able to shoot the barrel obviously but just based on customer support alone, I am impressed would recommend them if you were looking for something new to put on your gun.