Alright, so how would be the best way to mount this one piece mount on a flat top AR? Is it possible to do without setting the gun in a vise? Unfortunately, I can no longer locate my vise which is why I was looking for others the other day. The other option is to cut a piece of 2X4 so that I can set the AR on top of that via the mag well and then level the gun, then mount the one piece to that. I guess my question is how in the world do you level a one piece mount to a picatanny rail? I mean if the gun is level on both planes and then you mount the mount which apparently is not level then how in the world would you level it out? Its not like you could use wedges or something with this type of mounting system to level one side, if needed. I mean theoretically, if the gun is level, the machining is right on everything and there are no burrs then tightening the mount down to the rail should level it, correct? Then all I would need to do is level the scope within the mount and call it a day. Right?