Aero Precision M4E1 Threaded Complete Upper 12.5" 5.56 BRL 12" M-LOK AR15 ATLAS S-ONE HG - Anodized Black

Aero Precision M4E1 Threaded Complete Upper 12.5" 5.56 BRL 12" M-LOK AR15 ATLAS S-ONE HG - Anodized BlackThis complete upper includes our 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. Our 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.Includes:M4E1 Threaded Assembled Upper Receiver12" M-LOK ATLAS S-ONE Handguard12.5" 5.56 Government Profile CMV Barrel, Carbine LengthLow Profile Gas Block and Carbine Length Gas TubeAR15 A2 Birdcage Flash HiderProduct comes assembledThis complete upper does not include BCG or Charging Handle.M4E1 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 read 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 barrels12.5" 5.56 CMV Carbine Length Barrel Features:Chamber: 5.56Length: 12.5"Twist: 1 in 7Threading: 1/2"x28Material: Chrome Moly VanadiumFinish: QPQ corrosion resistant finish both inside and outGas Block: .750Gas System Length: CarbineWeight: 22ozM4 Barrel ExtensionHP and MPI TestedSpecifications:Caliber/Gauge: 5.56x45Barrel Length: 12.5"Barrel Twist: 1:7Barrel Bore Type: RifledBarrel Finish: QPQ Corrosion ResistantBarrel Fluting: NoneBarrel Profile: GovernmentFirearm Fit: MultiThreaded Barrel: YesCondition: New