u/One-More-User-Name

I finally got my Sig Hexium 556 Inconel HUB mount suppressor out of ATF jail and now that I want to install my HUB mount, I can't get the bloody direct mount unscrewed from the can. Can anybody tell me if Sig used Rocksett to put the direct mount into the suppressor at the factory? I plan to call Sig tomorrow to ask, but I thought I'd see if anyone here had relevant knowledge.