Aero Precision AR-15 M4E1-E Complete Upper Assembly 350 Legend 20" Barrel 16.6" ATLAS R-ONE Handguard Black

Aero Precision M4E1 Threaded 20" .350 Legend Carbine Length Complete Upper w/ 16.6" ATLAS R-ONE Handguard - Anodized BlackThis complete upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. 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 Receiver16.6" ATLAS R-ONE Handguard20" 5.56 Rifle Length CMV BarrelLow Profile Gas Block and Rifle 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 R-ONE Handguard Features:Full top picatinny rail for optional attachmentsQuick 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 barrels20" .350 Legend Carbine Length CMV Barrel Features:.350 Legend 20" Carbine Length, 1/16 twist, 4150 CrMoV, QPQ, gas port drilled.750 gas block journalGovernment ProfileRifle length gas system, .0785 gas portM4 Feed Ramp ExtensionHP and MPI testedStandard A2 flash hiderSpecifications:Caliber/Gauge .350 LegendBarrel Length 20"Barrel Twist 1:16Barrel Finish QPQ Corrosion ResistantFirearm Fit AR-15Threaded Barrel Yes**Does not include BCG or Charging Handle**