Aero Precision M4E1 Threaded Stripped AR-15 Upper - No Forward Assist - Anodized Black
NOTE: Port door 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
- No forward assist
- Compatible with standard AR-15/M16 components
- Barrel nut torque - 50 ft-lbs
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
It's an upper
by Mully316 -
Decided to go with the slick side for an ultra-light build. I've always liked the fit and finish of the M4E1 Aero products, so it was a natural choice. This upper met my expectations. Finish was perfect and it fit tight with my ballistics advantage lower receiver. Solid upper from a solid company.
Aero Precision upper receiver
I've purchased Aero Precision uppers / lowers to build 4-5 MSR's over the past few years. I built a .22LR rifle with a dedicated CMMG barrel and BCG with an Aero Precision M4E1 upper without the forward assist. Looks and Works beautifully. Aero Precision makes a great affordable product. Highly recommend.
Aero Quality, Primary Arms efficiency
by Joe T -
This is my 3rd Aero purchased from Primary Arms. The Aero quality is consistent and the pricing is always exceptional from Primary Arms.
Aero always comes through
by Wesley -
I’ve been building custom ARs for years and Aero is always my go-to for high quality, excellent fit and finish. Best balance of quality and cost on the market.
by Paxton -
It feels and looks great to not have a forward assist. Functions just fine. I am not one that thinks you need the best high end upper - I dont know the difference when shooting. It is solid. I would buy again no problem.