Mil spec forged 7075-T6 upper features M4 feed ramps, machined M4 and T marks with a mil-spec finish, marked with the Palmetto State Armory logo. MP and HP tested hammer forged chrome molly vanadium F.N. double chrome lined machine gun barrel chambered in 5.56 NATO, with a 1/7 twist and M4 barrel extension. Has an F-marked front sight post, sling swivel and A2 flash hider. Lightly used! SOLD! $360 plus shipping SOLD!