I'm selling my custom built 16" ultralight AR upper, here are the specs:
ABS Carbon Fiber laminated stainless steel barrel, 16.1" carbine length, 1/8 twist, M4 feedrams, fitted with a stainless PRI gasblock. Chambered in .223 Wylde
PRI carbon fiber free float handguard with the lightweight Al barrel nut (no rails are included, but you can get them from PRI).
CMT T-marked flat top upper receiver with M4 cuts.
Phantom 5 port flash suppressor.
Upper is used, probably fired between 400-500 rounds, and there are a few marks on the mounting rails where LaRue mounts were attached, otherwise it's in perfect shape.
You must add your own bolt, bolt carrier, and charging handle.
The entire upper, without BC group, weighs only 2 lbs and 13 oz!
Asking $820 shipped insured to your door.