The F1 Firearms C7K AR-10 Contoured Handguard is a high profile DPMS handguard and includes the barrel nut as well as necessary mounting hardware.
Yes. The F1 Firearms C7K AR-10 Contoured Handguards will fit most DPMS style 308 uppers including the Aero M5.
Yes. The F1 Firearms C7K AR-10 Contoured Handguards will fit most DPMS style uppers including those from Aero Precision.
Yes, as long as your rifle is DPMS High Profile compatible.
Yes, this should fit an Armalite AR-10.