I have owned several large frame AR pattern rifles over the years, been lurking here since 2010, decided I needed a light version and picked this up, not as light as I would have liked but he price was right, have approximately 400 rounds of Lake City through it without a hitch.
Only upgrades so far are a LaRue MBT-2S Trigger and a Trijicon HX Credo 1-6 mounted in a Warne XSKEL mount, 9.3 pounds.
ARFX Skeleton Stock will replace the adjustable carbine stock, not much of a fan of the carbine stocks.