Aero Precision M4E1 Threaded Stripped AR-15 Upper Receiver - Black
NOTE: Port door and forward assist not included.
- Picatinny profile blends seamlessly with Aero Enhanced and ATLAS series handguards
- M4 Feedramps
- .250 takedown pin holes
- Laser engraved T-marks
- Machined from 7075-T6 forged aluminum
- Anodized Black
- Compatible with standard AR-15/M16 components
- Barrel nut torque - 50 ft-lbs
- Weight: 6.9 oz
The M4E1 Threaded Upper Receiver is designed to pair perfectly with the Aero M4E1 Lower Receiver, offering a billet look without the billet price.
Aero Precision is known for superior engineering and machining. They push the boundaries of manufacturing and challenge the status quo by constantly looking for new ways to develop and evolve.
California Prop 65 warning
WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.
Ratings & Reviews
Possibly the nicest, best fitting forged upper.
by Eric -
These are very nice forged uppers with a billet look. The barrel receiver is a hair tighter so your barrel extension fits in very snug with no wiggle like regular milspec uppers. Tried multiple barrels and they all fit snug . The FA assist allen head bolt instead of pin is a very nice touch and made installation take all of maybe 15 seconds. Finish is nice and even.matches well with most my lowers. A tad darker than some , but thats to be expected with any combination of uppers and lowers. It fits snug to all my lowers, no wobble or slop. I would definitely reccomend. I've used a lot of different branded forged uppers and these are probably at the top.
Easy to Work With.
Bought this for a blemished M4E1 lower. Finish and machining is quite nice. The threaded pin for the forward assist install makes that process very quick. Fit between upper and lower were acceptable (same with other brand lowers). A slight bit of wobble, tighter than my Colt M4 but a little looser than my SOLGW (they supposedly machine for a very snug fit). Barrel fitment is snug. Not thermal fit-tight like a BCM upper but snug enough that you can insert the barrel, hold it pointing down and the barrel not fall out. I tried this with both a Daniel Defense 14.5" and a SOLGW 13.7" and two separate M4E1 uppers. For reference, I used a Colt upper for another build and the barrel fitment was looser but not out of spec. Overall, very satisfied with these uppers and would recommend.
Great looking upper
Got these on sale. Nice looks, fit and finish. Used them twice on different builds. Feed ramps and barrels all aligned perfectly. Didn’t have to adjust anything. The screw for the forward assist makes installation a breeze. Black finish is a bit darker when compared to some lowers.