Bushmaster A3 upper. It is pre ban 16" heavy barrel with a phantom flash hider. Barrel is chrome lined 1/9 twist marked BMP 5.56 NATO 1/9 HBAR. M4 hand guards or CAR handguards are also part of the deal, your choice. M4 feedramps have been added to this upper as well, assuring flawless feeding. I'd say there have been around 800 rounds through this upper,. Pics upon request, please include e-mail address for pics. Complete Bushmaster bolt and carrier assembly and charging handle included!! I need to sell this off to finance another project so I'm not looking for trades at the moment. Payment via money order only. Buy it all for $spf and i will ship and insure for free to lower 48.