Finally picked her up today.
Initial impressions:
1) Very solid and well made. Everything is very tight and well finished. The finish is a dull, typical rough AR texture. Upper/lower match perfectly.
2) I like the chrome plated bolt and carrier. It literally wipes off clean.
3) Factory stock has to go. Typical M4 stock. Will be replaced with a Magpul MOE or CTR.
4) I am so-so on the AC-556 hider. It was not timed perfectly (not to 12:00, which I remedied) but I can't decide if I'd rather throw an A1 or Vortex on there.
5) The gun is a tad nose heavy, but nowhere near ungainly or off balance.
6) Love the rail system. Typical Troy quality - solid as a rock. Same for the sights. No complaints here.
7) Piston system is straight forward and easy to disassemble. The gas regulator is VERY tight and you almost NEED a bullet tip to manipulate it.
Overall this is a well built rifle. I have not shot it yet, but if it shoots well and gives me no problems I'll be sold. Ruger covered a lot of bases with this one, and they MAY have pulled it off.
I'll update with a range report and more pics.
In short this rifle is much nicer than many of you might want to give it credit for being.
Forgive the uber crappy pic.