Aero Precision M4E1 Complete Lower Receiver W/MOE Grip & UBR GEN2 Carbine Stock
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Aero Precision
Overview
The Aero Precision M4E1 Complete Lower Receiver is designed for builders looking to streamline their AR-15 assembly without sacrificing quality. Made from durable 7075-T6 aluminum and featuring a hardcoat anodized finish, this complete lower includes a Magpul MOE grip and a UBR Gen2 carbine stock, offering a solid foundation for a reliable firearm. This lower receiver is commonly integrated into builds that utilize a carbine gas system and chamber the 5.56 NATO caliber, making it a versatile choice for a variety of applications.
Specifications
Aero Precision M4E1 Complete Lower Receiver W/MOE Grip & UBR GEN2 Carbine Stock
Build history on GunPartPicker
Builders on GunPartPicker first added the Aero Precision M4E1 Complete Lower Receiver W/MOE Grip & UBR GEN2 Carbine Stock to a build in February 2026.
It was out of stock everywhere we track for all of September 2026, and today none of the 2 retailers we track has it in stock right now. Listed prices start at $429.99 at Brownells for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
The part most often added in each category by the 7 builds that include this one
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Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
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