^Lot 1405 M4/AR Upper.

M4 configuration with carbine length gas-block. Unbranded flat-top receiver with integral rail, forward assist, dust cover, shell deflector, extended latch charging handle. 16" 5.56 NATO SOCOM barrel, 1:7 twist, ported muzzle break, F-marked A2 front sight base, missing post, bayonet lug, no bolt. Black anodized finish, FDE AB Arms handguard. Bore is very good/bright.