FS2000 Thread Pitch

[57js]

I have a FS2000, and I will be picking up a YHM Phantom Titanium .308 suppressor in about a month or so. I want to get a QD mount for it. Does anyone know what thread pitch the FS2000 is so I can get the appropriate QD mount?

Also, what is the main difference between the flash muzzle style and muzzle break style mount?

Thank you.