clandestine
AR-15 Savant
I don't have one yet and don't know what it would need. I had a thought about something the other day (I think installing free floating hand guard on my AR) but I'm not sure what it was and thought of you. it was more out of curiosity.
A free float could be fabricated but the problem lies in the gas tube, if you go with a floated handguard the gas tube should be unitized (Welded or Soldered) in place to optimize the accuracy potential and minimize vibration.
That would be a very cool setup. with a black buttstock.