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Aero Precision
Overview
The Aero Precision M4E1 Stripped AR-15 Lower Receiver in Black is engineered from durable 7075-T6 aluminum, providing a solid foundation for your build. This stripped lower features a .154 trigger pin hole, making it compatible with a wide range of trigger options, and its hardcoat anodized finish enhances durability and corrosion resistance. This lower is frequently used in mid-length gas system builds chambered in 5.56 NATO, making it a versatile choice for those looking to create a reliable and accurate rifle.
Aero Precision M4E1 Stripped AR-15 Lower Receiver - Black
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Aero Precision M4E1 Stripped AR-15 Lower Receiver - Black ranked #17 of the 507 lower receivers builders added on GunPartPicker in August 2026, behind the Smith & Wesson Sw M&P15 Stripped Lower Receiver 5.56mm, with about 1% of all lower receivers added to builds. Down from #15 in July. Builds with this lower receiver are split between 5.56 NATO (53%) and .223 Wylde (21%), split between mid-length (44%) and carbine-length (38%) gas systems, and nearly all AR-15.
It was out of stock everywhere we track for all of August 2026, and today none of the 5 retailers we track has it in stock right now. Listed prices start at $112.99 at Brownells for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
We ranked every lower receiver by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Lower Receiver Trends →The part most often added in each category by the 507 builds that include this one
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CMMG AR-15 HD Pivot and Takedown Pin Parts KIT - 55AFF3B
Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Aero Precision M4e1 Stripped Ar-15 Lower Receiver - Black
| Build | Parts | Total |
|---|---|---|
 | 23 | $2923.35 |
 | 12 | $1384.32 |
 | 18 | $1205.86 |
 | 10 | $1483.00 |
 | 17 | $1490.46 |
 | 28 | $3665.40 |
 | 27 | $1946.75 |
 | 11 | $1149.19 |
 | 26 | $4662.41 |
 | 24 | $3253.62 |
| 14 | $1166.39 |
 | 8 | $697.16 |
2 global ratings
Top reviews
tolerances on the takedown pin holes were correct, no slop. integrated trigger guard saves a step in the build. one nit, the aero logo on the magwell is placed a touch off center compared to my other M4E1, only OCD builders will notice
aero quality is what you expect at this price point, no complaints on machining. only knock is i ordered two from different batches and the anodize is a noticeable shade off in direct light. matched within the same build is fine
