12.5" blackout upper with urx 2

12.5" 300 blackout upper. Cmmg barrel, aac flash hider, urx 2. Unsure of the bcg, bcm mod 5 charging handle. Has some wear on it but less than 20 rounds through the barrel. Still has some paint residue. Asking 500 or trade for black exps3
, email is best
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