Aero Precicion M4E1 Threaded Complete Upper 8" .300 Blackout Barrel 7" M-LOK ATLAS S-ONE Handguard - FDE Cerakote

Aero Precicion M4E1 Threaded Complete Upper 8" .300 Blackout Barrel 7" M-LOK ATLAS S-ONE Handguard - FDE CerakoteAero Precision APAR700311M1: This complete upper includes our new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Aero Precision's proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards. This complete upper does not include BCG or Charging Handle.Includes:M4E1 Threaded Assembled Upper ReceiverATLAS S-ONE Handguard of choice8" .300 Blackout CMV BarrelLow Profile Gas Block and Pistol Length Gas TubeProduct comes assembledM4E1 Threaded Upper Receiver Features:New enhanced forging that gives the upper receiver a "billet look"New picatinny profile that blends seamlessly with our Enhanced Series HandguardsM4 Feedramps.250 takedown pin holesLaser engraved T-marksIncludes port door and forward assist installedATLAS S-ONE Handguard Features:Front and rear picatinny railEliminated center of top rail for weight reductionIndexing grooves in 12:00 position for positive grip controlQuick disconnect sling socket at the 3, 6 and 9 o'clock positionsCompatible with low profile gas blocks1.3" Inside diameter1.5" Outside diameterCompatible with mil-spec AR15 upper receivers and barrels8" .300 Blackout Barrel Features:Length: 8"Twist: 1 in 7Muzzle: 5/8x24 ThreadedMaterial: 4150 Crome Moly VanadiumFinish: QPQ corrosion resistant finish both inside and outGas Block: .750Gas Port: .109Gas System Length: PistolWeight: 18ozM4 Barrel ExtensionHP and MPI Tested