The Battle Arms Development Rigidrail M-Lok Handguard weighs between 7.3oz - 10.44oz depending on the length.
The Battle Arms Development Rigidrail M-Lok Handguard has an internal diameter of 1.315". So it can accept suppressors with a diameter less than 1.315".
No it will not.
This will be compatible with AR-15 Upper Receivers. It should work for you.
Yes, it should work.
Yes, it will.
I'm running a superlative arms piston kit (pistol length) on mine and it works great.
As long as the Adam's Arms gas block is low profile, I would think your GTG.