Aero Precision M4E1 Complete Upper 20" 5.56 Rifle Barrel EM-15 Quantum Handguard - Anodized Black

This Complete Upper includes Aero Precision's 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.Specifications:Cartridge: 5.56x45mm NATOBarrel Twist Rate: 1-7Handguard Length: 15 inGun Rail: M-LOKMuzzle Device: A2 Flash HiderGun Model: AR-15Included Accessories: StandardCondition: NewFeatures:M4E1 Upper Features:Forged from 7075 T6 aluminumPrecision machined to M4E1 specsM4 feedrampsMatte black hard coat anodized Mil 8625 Type 3 Class 2Laser engraved T-marks (Anodized only)Comes assembledwith 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 accessories1.78in inside diameter fits most muzzle devices and 1.5in suppressorsCompatible with low profile gas blocks18in 5.56 Rifle Length Barrel Features:5.56 Nato 18in Rifle Length Barrel4150 CrMoV w/ QPQ finish1/7 twist.750 gas block journalRifle length gas systemM4 Feed Ramp ExtensionHP and MPI testedStandard A2 flash hiderIncluded Accessories:M4E1 Enhanced Assembled Upper ReceiverEnhanced Handguard of choice18in 5.56 Rifle Length CMV BarrelLow Profile Gas Block and Rifle Length Gas TubeProduct comes assembledThis complete upper does not include BCG or Charging HandleThese products may be selected as add-ons under the FINISH YOUR BUILD tab