Aero Precision M4E1 Threaded 11.5" 5.56 R-ONE AR-15 Complete Upper - Anodized Black

Aero Precision M4E1 Threaded 11.5" 5.56 R-ONE Complete Upper - Anodized BlackThis Aero Precisions 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 Receiver10.3" ATLAS R-ONE M-LOK Handguard11.5" 5.56 CMV Barrel, Carbine LengthLow Profile Gas Block and Carbine Length Gas TubeProduct comes assembledThis complete upper does not include BCG or Charging Handle.The muzzle brake that comes with this complete upper receiver is NOT pinned nor welded to this barrel.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 R-ONE HANDGUARD 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 installed11.5" 5.56 BARREL FEATURES:5.56 Nato 11.5" Barrel, 1/7 twist, 4150 CrMoV, QPQ, gas port drilledGovernment Profile.750 gas block journalCarbine length gas system, .0785 gas portM4 Feed Ramp ExtensionHP and MPI testedStandard A2 flash hider