The Midwest Industries SP Series AR-15 M-LOK Handguard might work with the Cry Havocs QRB Barrel Plat Adapter. From what information I could find the QRB Barrel Plat Adapter is compatible with free float handguards with a width of 2.0". The outside diameter of the Midwest Industries SP Series AR-15 M-LOK Handguard is 2.0" so it should work but I recommend contacting Cry Havoc to confirm compatibility.
The manufacturer doesn't specify what torque wrench size the barrel wrench is compatible with, so I recommend contacting the manufacturer to determine compatibility.
Yes, this should work just fine.
Provided the diameter is smaller than 1.75 inches, this hand guard will work.
It is steel.
No, this is for AR15 they do not use the same handguards.
No, this will not work with pistol systems.
This uses a proprietary barrel nut by Midwest Industries
The Midwest Industries SP Series AR-15 M-LOK Handguard should be installed with the included barrel nut to ensure proper fitment.
I'm going to be ordering the 10 inch for the same rifle you mentioned, along with a dead air wolfman. I'm figuring about 3-4 inch of can protruding from the hamdgards business end.