Almost all of the suppressor makers have published thread specs that call out a clearance cut behind the thread tendon so that you end up with a nice square shoulder to seat Thea direct mount can against.
on the cans that use a mount on the barrel, the mount will generally come with shims and rocksett.
The better muzzle devices and cans will have a counterbore in the threads to account for the lack of threads on typical factory barrels such as your bravo company barrel.
When I thread barrels, I have a nice clearance cut behind the thread tennon.