I have a used Aero Precision COP Upper in 300 BLK. About 400-500 rounds through it. Here are the specs:

Aero Precision Carbine length COP Monolithic Upper
10.5" Rainier Arms 300 BLK Select Barrel
Rainier Arms NiB BCG
Rainier Arms Match Gas block
Pistol Length Gas Tube
Northtech Defense Titanium Forward Assist
Fortis Manufacturing Hammer Charging Handle
AAC 51T Blackout


What you see is what you get, priced to move!

$525 Shipped OBO

NO Trades