AERO PRECISION M4E1 PRO - LOWER RECEIVER - OD GREEN
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Aero Precision
AERO PRECISION M4E1 PRO - LOWER RECEIVER - OD GREEN
The Aero Precision M4E1 Pro Stripped Lower Receiver in OD Green is a precision-machined AR-15 lower built for builders who demand a higher standard — combining enhanced ergonomics, tight tolerances, and a striking Olive Drab Green anodized finish into one of the most sought-after stripped lowers on the market.
- Machined from 7075-T6 aluminum for exceptional strength and durability
- MIL-SPEC hardcoat anodized in distinctive Olive Drab Green finish
- M4E1 Pro design features an integrated trigger guard for a cleaner build
- Flared magwell improves magazine insertion speed and reliability under pressure
- Compatible with all standard MIL-SPEC AR-15 upper receivers and components
- Semi-automatic configuration; accepts standard .223/5.56 fire control groups
Who This Is For
The M4E1 Pro OD Green lower is ideal for AR-15 enthusiasts, custom rifle builders, and competitive shooters looking to construct a reliable, high-performance rifle with a distinctive aesthetic. Whether you're building a precision range rifle, a hunting setup chambered in .223 Remington, or simply want an upgrade over a mil-spec lower, this receiver delivers the fit, finish, and features to make your build stand out.
Specifications
| Brand | Aero Precision |
|---|---|
| Model | M4E1 Pro Stripped Lower Receiver |
| Part Number | APAR600031AC |
| Caliber | .223 Remington / 5.56 NATO |
| Material | 7075-T6 Aluminum |
| Finish | Hardcoat Anodized |
| Color | Olive Drab Green (OD Green) |
| Action Type | Semi-Automatic |
| Trigger Guard | Integrated (Eliminated Pin) |
| Magwell | Flared for Faster Reloads |
| Compatibility | MIL-SPEC AR-15 Platform |
| Condition | Stripped (No FCG or Buffer Tube) |
Frequently Asked Questions
What makes the M4E1 Pro different from a standard stripped lower receiver?
The Aero Precision M4E1 Pro features several enhanced design elements over a standard MIL-SPEC lower, including a flared magwell for faster, more reliable magazine changes, an integrated trigger guard that eliminates the traditional trigger guard pin, and tighter overall tolerances for a better fit with Aero Precision M4E1 upper receivers. These upgrades make it a superior choice for custom builders who want more functionality and a cleaner aesthetic without sacrificing compatibility.
Is this lower receiver compatible with any AR-15 upper receiver?
Yes — the M4E1 Pro Stripped Lower is compatible with any standard MIL-SPEC AR-15 upper receiver. However, Aero Precision specifically designed the M4E1 upper and lower receivers to work together, and pairing them will result in the tightest fit and best overall feel. If you use a third-party upper, you may experience slightly more play, which is normal for the AR-15 platform and does not affect reliability or accuracy.
What do I need to complete a build with this stripped lower?
As a stripped lower receiver, this component requires a complete lower parts kit (LPK) including the trigger group, hammer, pins, springs, safety selector, magazine release, bolt catch, and buffer tube assembly. You will also need a stock or pistol brace, a buffer, and a buffer spring. This lower is sold as an NFA-regulated firearm receiver, so all applicable federal and state transfer regulations apply — purchase must be completed through a licensed FFL dealer.