Originally Posted By AlphaThree:
This. I have one that has been pending for 2 months now. It is going on a 9" 300 BLK SBR and a Sig 556 SBR.
In reality, though, any 7.62 can will work and the 5.56 is not going to suppress like a round that is subsonic. I have honestly never heard a suppressed centerfire rifle in my life.