Faxon Firearms lists the Streamline Gen2 Handguard as having an inner diameter of 1.34", but does not provide the dimensions for the gas tube channel. I would recommend reaching out to them directly for more information.
https://faxonfirearms.com/support/
The Next Level Armament M-Lok Handguard has an internal diameter of 1.4". These handguards will include the barrel nut and mounting hardware.
No, these handguards are designed for AR-15 receivers and will not fit the larger AR-10 pattern receivers.
These handguards are designed to fit any standard AR-15 upper receiver threads such as the Aero M4E1 and AR-15 uppers. They will not fit the Aero uppers with the proprietary handguard mount (M4E1 Enhanced).
All of the aluminum handguards are the exact length that is stated so the 9" model is 9.0 inches in overall length.
The barrel nut for the aluminum handguards has flats designed for a 1.25" crow's foot wrench.
The 13" hanguard has a weight of 13.28oz.
The barrel nut has flats for a 1.2" or 1 1/4 inch wrench.
Yes, this handguard will work with that upper.
A standard barrel nut wrench will work.