Lol...no this nut has shot in the past year and it quit well at it. No I have not place a muzzle device on the end yet and it is a one shot at a time rifle. It's like I fire and the rifle jumps 12 inches left or right. I have a few things going on with other stuff but I will get a break when I order a new barrel. Probably after this 5.56 piston build Im into and after I get my Sig TacOps 1911. Then it will be new barrel, break, and bipod. Then I am setting up my reload room. I have been collecting equipment and components for some time now grabbing up everything I can when I find good deals.