DealBarrel: Phosphate coated 4150V Chrome Moly steel. Chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a carbine-length gas system. Barrel is finished off with a standard handguard in flat dark earth, an F-Marked gas sight base, and an A2 flash hider. from Palmetto State Armory (Product 51655124172B) |