This is a KCA built complete upper. Complete with Optic!
Bear Creek Arsenal 16″ 4150 Barrel Parderized and chambered in 5.56 NATO with mid length gas system. Bear Creek Arsenal upper receiver sith forward assist and dust cover. Bear Creek Arsenal Bolt Carrier Group and 7075 charging handle.
A2 Flash hider.
SS gas tube.
Trinity Force 12″ free float key mod hand guard.
And finally topped with a Trinity Force red/blue/green optic that includes a lifetime warranty!