I just noticed the following statement on Silencer Shop's Omega 7.62 page. I never noticed this being there before:
"SilencerCo was able to make the Omega so light by wrapping a paper-thin layer of titanium around a stainless steel baffle stack & a Stellite blast baffle. Because the outer titanium tube is too thin for welding, SilencerCo relied on gluing the core into the tube instead - and the result is one of the lightest consumer-oriented 7.62mm suppressors on the market."
The "gluing" statement is interesting. Anyone have an Omega with 5000+ rounds downrange yet?

