Came on a complete pistol I bought that I swapped out for a 5.56 upper before I ever shot it. Other than PSA test firing it (if I recall that they do), it's brand new. $220, no trades.

No bolt carrier group or charging handle.

Barrel: The 10.5" Nitride treated 4150V chrome moly steel barrel is chambered in 300AA Blackout, with a 1:8 twist rate, M4 barrel extension, and pistol-length gas system. This heavy profile barrel is finished off with a PSA 12" Lightweight Slant End M-Lok free-float rail, 750" low-profile gas block, and PSA
Fluted Flash Can.

Upper: Forged 7075-T6 A3 AR upper is hard coat anodized.
These uppers are made for us right here in the USA!