Got a Troy MCS, can't tell if its the best because I haven't tried it yet (or other super chassis) But this thing is solid. Got rails all around, a continuous one on the top, you can slap pretty much every AR accessories/stock/grip on it and it got a set screw at the front to put pressure on the front of the barrel. Weight a ton though, I did a mock up of components and I'm at 15.5 pounds, this give a new meaning of plinking with .308