Its a little early for the 6 digit clone builds and the clip slotting is not spec but a good start.
Its nice because you get the tombstone safety, the rear sight screws are there for the look and you have a short bolt shroud.
Personally I favor the early profile of that Remington bolt arm/knob.
Im looking for one to slide my .223 bolt in to make a .223 M40 clone if you are selling.