Thanks. I know a phone call would eventually get to them. But I got it figured out on my own. I had called them when I first got the gun with the issue and all they wanted me to do is send it in. But in their defense, I didn't tell them I had a suppressor on it. That said, if the barrel is threaded, besides a flash suppressor, what else would you put on it. Unless I'm missing something that needs to be done to support the suppressor install.