
Availability: In Stock
Current Stock: Out of stock
Building an AR-308 platform rifle from the ground up calls for quality components that work together without compromise. The Aero Precision M5 Lower Parts Kit with MOE SL Grip in Black gives you the mechanical foundation needed to complete an M5 lower receiver—without locking you into a factory trigger. This kit is built for shooters who plan to upgrade the fire control group separately, whether that means a match-grade trigger, a lightweight match pull, or whatever your precision or hunting setup demands.
Aero Precision engineered this M5 lower parts kit specifically for .308 Winchester and larger cartridges. It includes all the small parts and springs required to assemble a functional lower: takedown and pivot pins (M5-spec), bolt catch assembly with roll pin and spring, extended magazine catch button, magazine catch body and spring, buffer retainer and spring, safety selector with detent and spring, and the hardware needed to secure a threaded takedown pin detent. The Magpul MOE SL Grip in Black offers a proven ergonomic profile that thousands of AR builders trust—it's slim, comfortable under recoil, and proven across countless platforms.
Because this kit ships without a fire control group (trigger, hammer, disconnector), you're free to choose exactly the trigger that suits your rifle's mission. Whether you're threading together a long-range hunter, a 3-gun rifle, or a precision .308 build, you're not paying for or forced to use a trigger you'd just replace anyway.
| Brand | Aero Precision |
| Platform | AR-308 (M5) |
| Grip | Magpul MOE SL in Black |
| Fire Control Group | Not included |
| Takedown Pin Type | M5 (.308) Spec |
| Pivot Pin Type | M5 (.308) Spec |
| Components Included | Takedown pin, pivot pin, bolt catch assembly, extended magazine catch button, magazine catch body and spring, buffer retainer and spring, safety selector with detent and spring, detents, springs, 4-40 set screw |
This kit is designed specifically for Aero Precision M5 Lower Receivers and other AR-308 (.308 Winchester) pattern lowers. The takedown and pivot pins are M5-spec; they are not compatible with standard AR-15 (.223) lowers.
No. This kit intentionally excludes the fire control group (trigger, hammer, and disconnector). It's built for builders who want to install an aftermarket or upgraded trigger separately. You will need to source these components separately to complete your lower.
You will need to supply a fire control group (trigger, hammer, disconnector, and trigger guard are common additions). If you plan to use a threaded takedown pin detent hole, the 4-40 set screw is included. Consult your lower receiver manual and your chosen trigger manufacturer's instructions for any other requirements.
The MOE SL is a slim, ergonomic grip profile that works well in a variety of shooting disciplines. Its narrower width and angle are proven across thousands of AR builds. Fit and comfort are personal; if you prefer a different grip angle or profile, Magpul and other manufacturers offer alternatives that will fit this lower receiver.

SKU: 194195876 • Weight: 0.38oz





Availability: In Stock
Current Stock: Out of stock
Building an AR-308 platform rifle from the ground up calls for quality components that work together without compromise. The Aero Precision M5 Lower Parts Kit with MOE SL Grip in Black gives you the mechanical foundation needed to complete an M5 lower receiver—without locking you into a factory trigger. This kit is built for shooters who plan to upgrade the fire control group separately, whether that means a match-grade trigger, a lightweight match pull, or whatever your precision or hunting setup demands.
Aero Precision engineered this M5 lower parts kit specifically for .308 Winchester and larger cartridges. It includes all the small parts and springs required to assemble a functional lower: takedown and pivot pins (M5-spec), bolt catch assembly with roll pin and spring, extended magazine catch button, magazine catch body and spring, buffer retainer and spring, safety selector with detent and spring, and the hardware needed to secure a threaded takedown pin detent. The Magpul MOE SL Grip in Black offers a proven ergonomic profile that thousands of AR builders trust—it's slim, comfortable under recoil, and proven across countless platforms.
Because this kit ships without a fire control group (trigger, hammer, disconnector), you're free to choose exactly the trigger that suits your rifle's mission. Whether you're threading together a long-range hunter, a 3-gun rifle, or a precision .308 build, you're not paying for or forced to use a trigger you'd just replace anyway.
| Brand | Aero Precision |
| Platform | AR-308 (M5) |
| Grip | Magpul MOE SL in Black |
| Fire Control Group | Not included |
| Takedown Pin Type | M5 (.308) Spec |
| Pivot Pin Type | M5 (.308) Spec |
| Components Included | Takedown pin, pivot pin, bolt catch assembly, extended magazine catch button, magazine catch body and spring, buffer retainer and spring, safety selector with detent and spring, detents, springs, 4-40 set screw |
This kit is designed specifically for Aero Precision M5 Lower Receivers and other AR-308 (.308 Winchester) pattern lowers. The takedown and pivot pins are M5-spec; they are not compatible with standard AR-15 (.223) lowers.
No. This kit intentionally excludes the fire control group (trigger, hammer, and disconnector). It's built for builders who want to install an aftermarket or upgraded trigger separately. You will need to source these components separately to complete your lower.
You will need to supply a fire control group (trigger, hammer, disconnector, and trigger guard are common additions). If you plan to use a threaded takedown pin detent hole, the 4-40 set screw is included. Consult your lower receiver manual and your chosen trigger manufacturer's instructions for any other requirements.
The MOE SL is a slim, ergonomic grip profile that works well in a variety of shooting disciplines. Its narrower width and angle are proven across thousands of AR builds. Fit and comfort are personal; if you prefer a different grip angle or profile, Magpul and other manufacturers offer alternatives that will fit this lower receiver.
SKU: 194195876 • Weight: 0.38oz
