Aero Precision M4E1-E Complete Upper, 8″ 300 Blackout Pistol Barrel, 7.3″ Enhanced MLOK HG – Anodized Black
The Aero Precision Complete Upper Receiver epitomizes speed, efficiency, and dependability for fashioning a semi-custom AR15 rifle. Crafted with meticulous precision, this 300 Blackout M4E1 Threaded Complete Upper boasts an 8″ Pistol barrel and a 7.3″ Gen 2 Enhanced handguard. Meticulously machined, comprehensively assembled, and subject to rigorous test-firing by skilled Aero Precision armorers, it guarantees unparalleled performance.
* NFA Rules apply for this item.
* The muzzle device is NOT pinned nor welded to the barrel.
* Does not include Bolt Carrier Group or Charging Handle.
- M4E1 Threaded Assembled Upper Receiver – Anodized Black
- 7.3″ M-LOK Gen 2 Enhanced Handguard – Anodized Black
- 8″ 300 BLK Pistol Barrel
- Low-profile Gas Block and Gas Tube
- Standard A2 Flash Hider
M4E1 Threaded Upper Receiver Features:
- New enhanced forging gives the upper receiver a “billet look.”
- M4 Feed ramps
- .250 takedown pin holes
- Laser engraved T-marks
- Includes port door and forward assist installed
Gen 2 Enhanced Handguard Features:
- 1pc free-float design
- Built-in anti-rotation tabs
- Scalloped rails
- Quick disconnect sling socket at the 3, 6, and 9 o’clock positions
- Compatible with low-profile gas blocks
- 1.78″ Inside diameter, fits most 1.5″ suppressors
- Additional milling along flats to aid with gripping and visual appeal
- New profile for the continuous Picatinny top rail
300 BLK Barrel Features:
- .300 BLK 1/7 twist, 4150 CrMoV, QPQ finish
- .750 gas block journal
- Pistol gas system
- M4 Feed Ramp Extension
- HP and MPI tested
|Made in USA||
4150 Chrome Moly Vanadium, 6061-T6 Aluminum
Standard AR15 components
Upper Receiver Parts
Arm or Ally is a stocking dealer for all Aero Precision, Faxon Firearms, Ballistic Advantage, HOLOSUN, Toolcraft, Elftmann Tactical, Timney, TriggerTech, HIPERFIRE and named the #1 Overall E-Commerce Dealer for Aero Precision Products in 2020!