Well, I would suggest looking in the TFL and AR15.com FAQ's.
Seems these guys know their stuff.
I have heard that if the trigger is worked on, the gun can be amazingly accurate.
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The accuracy of a gun in intrinsic, good triggers make it easier for us to utilize the potential.
With that single, heavy, fixed barrel, and heavy hammer spring (=fast locktime) the rifle ought to be able to shoot 3-shot one ragged hole groups at 100yds.
That is, if you find a support system that minimally and consistently affects the barrel (and vibration pattern).
I'd be interested to hear your results once you've had some trigger time.
(Heck, for a couple hundred sans scope I may just get one myself.)
BTW, what's the twist rate?
-Kframe