Aero Precision M5E1 Enhanced Upper Receiver .308 Win 18

This Complete Upper includes our Gen 2 Enhanced Handguard! Key features include the addition of quick disconnect sling sockets, enhanced milling design for grip and visual appeal and a new profile for the picatinny top rail.Includes:M5E1 Assembled Upper ReceiverGen 2 M-LOK Enhanced Handguard of choice18" .308 CMV BarrelLow Profile Gas Block and Rifle Length Gas TubeProduct comes assembledThis complete upper does not include a BCG or Charging Handle. These products may be selected as add-ons under the Finish Your Build tab M5E1 Upper Features:Forged from 7075 T6 aluminumPrecision machined to our specsM4 feedrampsLaser engraved T-marks (Anodized only).2795" takedown pin holesAccepts standard AR .308 componentsComes with forward assist and port door installedHandguard mounting platform is forged into the receiverGen 2 Enhanced Handguard Features:1pc free float designBuilt in anti-rotation tabsScalloped railsContinuous top rail1.78" inside diameter fits most muzzle devices and 1.5" suppressorsCompatible with low profile gas blocksGen 2 Feature - Quick disconnect sling socket at the 3, 6 and 9 o'clock positionsGen 2 Feature - Additional milling along flats to aid with gripping and add visual appealGen 2 Feature - New profile for the continuous picatinny top rail18" .308 CMV Barrel Features:Twist: 1 in 10Threading: 5/8 x 24Material: 4150 Chrome Moly Vanadium SteelFinish: QPQ corrosion resistant finish both inside and outGas Block Journal: .750Gast Port: .089Gas System Length: RifleWeight: 56.64ozDPMS Barrel ExtensionHP and MPI Tested