BARREL: 16 inches
ACTION: semi-auto/full-auto, regulated gas piston upper with 11T M.R.R.™ Tactical free floating monolithic top rail
CHAMBER: 5.56 X 45 mm NATO (.223 Rem)
WEIGHT: 5.74 lbs. (empty)
FINISH: NP3™ coated or black anodized

When ordering please note inventory status. If Back Ordered is indicated, you can still place an order. Lead time on uppers from POF-USA is approx. 60 to 90 days.