AIM Sports does not specify what size crows foot is required to tighten the barrel nut, please contact them directly for further assistance.
Unfortunately, AIM Sports Inc does not provide specific weight specifications for each their Ar-10 .308 Keymod Handguards. I'd recommend reaching out to them directly for more information.
It should, the gas port on a rifle length gas system is at 12"
You would need low profile.
No, the Armalite uses a proprietary barrel nut.
Yes, this includes the barrel nut and mounting hardware.
Yes, that would be compatible.
No, it will not be compatible.
The cut outs on the rail are for key mod accessories.
Yes, this includes the barrel nut and mounting hardware.