Aero Precision M4E1 Enhanced 16" .300 Blackout Complete Upper Receiver with 15" Enhanced M-LOK Handguard - Anodized Black - APAR640251M14

Aero Precision APAR640251M14: This Complete Upper includes Aero Precision's Gen 2 Enhanced Handguard. Key features include quick disconnect sling sockets, enhanced milling design for grip and visual appeal and a new profile for the picatinny top rail. This complete upper does not include BCG or Charging Handle.\n\nIncludes:\n- M4E1 Enhanced Assembled Upper Receiver\n- 15" Enhanced M-LOK Handguard\n- 16" .300 Blackout CMV Barrel\n- Low Profile Gas Block and Pistol Length Gas Tube\n- Product comes assembled\n\nM4E1 Upper Features:\n- Forged from 7075 T6 aluminum\n- Precision machined to M4E1 specs\n- M4 feedramps\n- Matte black hard coat anodized Mil 8625 Type 3 Class 2\n- Laser engraved T-marks\n- Comes assembled, with port door and forward assist installed\n- Accepts standard AR15/M16 components\n- Handguard mounting platform is forged into the receiver\n- Works with Aero Precision handguards but also fits most BAR-system handguards\n- Barrel nut and wrench are included\n\nGen 2 Enhanced Handguard Features:\n- 1pc free float design\n- Built in anti-rotation tabs\n- Scalloped rails\n- Continuous top rail\n- 1.78" inside diameter fits most muzzle devices and 1.5" suppressors\n- Compatible with low profile gas blocks\n- Quick disconnect sling socket at the 3, 6 and 9 o'clock positions\n- Additional milling along flats to aid with gripping and add visual appeal\n- New profile for the continuous picatinny top rail\n\nBarrel Features:\n- Chamber: .300 Blackout\n- Length: 16"\n- Material: 4150 Chrome Moly Vanadium\n- Finish: QPQ Corrosion Resistant Finish\n- Gas System Length: Pistol\n- Gas Block Journal: .750"\n- Twist Rate: 1:7 Inches\n- Muzzle: 5/8x24 Threaded\n- Weight: 29oz\n- Other: M4 Feed Ramp Extension, HP and MPI Tested, Standard A2 Flash Hider