Do I have to use thunderbeast muzzle devices or can I use surefire and other muzzle devices as well?  Not a big fan of running the brake because I will be using this carbine in classes and I'll just be blasting people to my left and right with a brake until my silencer comes in which will be a very long time.  

The Dominus SR is compatible only with the SR brake or SR FH (SR FH might not be available yet).

The Dominus CB is compatible with any of our CB-series muzzle brakes or FH's.    Area 419 has a CB adapter that we do not specifically endorse but a fair number of people use it.

What do I lose going with the CB over the SR?  The weight savings seems like a big reason to go CB.

The CB version is shorter and lighter just due to the mount not being present, but you lose the retention and full firing schedule that the SR mount permits, namely the full Dominus SR firing schedule.


Many details that explain it for both cans,

https://thunderbeastarms.com/products/dominus-sr

https://thunderbeastarms.com/products/dominus-cb