Aero Precision M4E1 Enhanced 16" .300 Blackout Quantum Handguard Complete Upper Receiver

This Complete Upper includes Aero Precision Quantum Handguard! Key features include the addition of built in anti-rotation tabs, removable 4-slot picatinny rail section for front sight and a 7 mounting surface for accessories. This complete upper does not include BCG or Charging Handle.Includes:M4E1 Enhanced Assembled Upper Receiver15" Enhanced Handguard16" .300 Blackout CMV BarrelLow Profile Gas Block and Pistol Length Gas TubeProduct comes assembledM4E1 Upper Features:Forged from 7075 T6 aluminumPrecision machined to M4E1 specsM4 feedrampsMatte black hard coat anodized Mil 8625 Type 3 Class 2Laser engraved T-marksComes assembled, with port door and forward assist installedAccepts standard AR15/M16 componentsHandguard mounting platform is forged into the receiverWorks with Aero Precision handguards but also fits most BAR-system handguardsBarrel nut and wrench are includedQuantum Handguard Features:1pc free float designRemovable 4-slot picatinny rail section for front sightBuilt in anti-rotation tabs7 mounting surfaces for KeyMod accessories1.78" inside diameter fits most muzzle devices and 1.5" suppressorsCompatible with low profile gas blocksBarrel Features:Chamber: .300 BlackoutLength: 16"Material: 4150 Chome Moly VanadiumFinish: QPQ Corrosion Resistant FinishGas System Length: PistolGas Block Journal: .750"Twist Rate: 1:7 InchesMuzzle: 5/8x24 ThreadedWeight: 29ozOther; M4 Feed Ramp Extension, HP and MPI Tested, Standard A2 Flash HiderSpecifications:Caliber/Gauge .300 BlackoutBarrel Length 16"Barrel Twist 1:7Barrel Finish QPQ Corrosion ResistantFirearm Fit AR-15Threaded Barrel Yes