The dimensions of the Next Level Armament AR-10 Ambidextrous Charge Handle are 10 × 4 × .5 in, and weighs 0.25 lbs.
Yes, the Next Level Armament AR-10 Ambidextrous Charge Handle will fit and function as intended on your Rock River Arms AR-10.
No, it unfortunately will not.
This appears to be an issue with the updated DPMS design. Your rifle sounds like it is a DPMS Gen 2. We unfortunately do not carry a charging handle for that design.
Yes, they should be compatible.
No, unfortunately it will not.
Yes, it should.