As listed in the title. The PSA lower seems to be a (Most likely National Gaurd) unit purchase after deployment judging on the model being OEF-15 with an engraving of Afghnaistan. Unit purchase being, "Lets all get lowers to memorilize our time kicking rocks for a year in Afghan" not a COTS rifle. Upper reciever group is a complete (early model) Diamondback in 300 Blackout. Also comes with a Magpul AFG and Ebay special sights.