Okay I am the surefire guy and I have some info that might help. We have seen a lot of issues with Noveske barrels as of late. Last time I checked we had 10 or so that the muzzle threads were not concentric to the bore. You wouldn't notice this until you ran a bore alignment rod down the barrel and suppressor. On almost all of my rifles I have a 1MOA shift or less. I have never seen or heard of one of our suppressors launch off a rifle without it not being installed properly. The lockring when tightened and installed properly cams behind the adapter itself. In order for it to shoot off the lockring would have to shear off completely, t or the tab break off that keeps the lockring tight and then the lockring spin around. If an end user has a problem with their suppressors they can reach out to me directly. cvlasek@surefire.com. I handle military sales.