O.K.. so I am starting too gather a few of these ARs...
Unlike the AK, with caliber marked on them..
Sitting side by side. These ARs all look the damn same.
With the uppers so easily interchangeable. Different calibers.
Any tricks you guys use too know what the hell caliber your putting on your lower.
Unless I am missing something. I dont see where the uppers are marked as too caliber. ???