Selling a 14.5 pin and welded Colt Socom upper w/BCM A2X flash hider. Upper has a Centurion C4 carbine length handguard, Tango Down foregrip, Gear Sector 1 inch light mount, and Knights Armament rear sight. Upper has a Daniel Defense BCG and charging handle. Upper has 280 rounds thru. $850 I'll cover shipping