Aero Precision AR-15 M4E1-E Complete Upper Assembly 5.56x45mm NATO 16" HBAR Barrel 15" EQ Gen2 Enhanced Handguard Black

Aero Precision APAR600206Q97: This complete upper receiver incudes an HBAR profile barrel that is laser marked \"HBAR\". This complete upper does not include BCG or Charging Handle. INCLUDES: M4E1 Enhanced Assembled Upper Receiver 15\" Enhanced Quad Rail Handguard 16\" 5.56 HBAR Barrel Low Profile Gas Block and Mid-Length Gas Tube AR15 A2 Birdcage Flash Hider Product comes assembled M4E1 UPPER FEATURES: Forged from 7075 T6 aluminum Precision machined to M4E1 specs M4 feedramps Matte black hard coat anodized Mil 8625 Type 3 Class 2 Laser engraved T-marks Comes assembled, with port door and forward assist installed Accepts standard AR15/M16 components Handguard mounting platform is forged into the receiver Works with Aero Precision handguards but also fits most BAR-system handguards Barrel nut and wrench are included GEN 2 ENHANCED HANDGUARD FEATURES: 1pc free float design Built in anti-rotation tabs Scalloped rails Continuous top rail 1.78\" inside diameter fits most muzzle devices and 1.5\" suppressors Compatible with low profile gas blocks Quick disconnect sling socket at the 3, 6 and 9 o\'clock positions Additional milling along flats to aid with gripping and add visual appeal New profile for the continuous picatinny top rail 16\" 5.56 HBAR BARREL 5.56 Nato 16\" Barrel, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled .750 gas block journal Mid-Length Gas System M4 Feed Ramp Extension HP and MPI tested Standard A2 flash hider