Build a dependable AR-15 foundation with the Aero Precision M4E1 PRO Stripped Lower Receiver in black. Designed for 5.56 NATO and .223 Remington configurations, this enhanced lower combines a 7075-T6 forged aluminum construction with precise machining and receiver geometry intended to simplify assembly. Its MIL-SPEC Type III Class 2 hardcoat anodized finish provides a durable black exterior.
The M4E1 PRO features an integrated trigger guard and flared magazine well, bringing thoughtful details to a streamlined platform. A threaded bolt catch pin and rear takedown detent spring channel help make installation more straightforward. This stripped AR-15 lower accepts standard MIL-SPEC components and is compatible with MIL-SPEC AR-15 upper receivers.
- Platform and caliber: AR-15 / M4; compatible with 5.56 NATO and .223 Remington builds.
- Enhanced forging: Made from 7075-T6 forged aluminum using Aero Precision’s M4E1 PRO design.
- Black finish: MIL-SPEC Type III Class 2 hardcoat anodizing.
- Integrated trigger guard: A built-in feature of the enhanced receiver design.
- Flared magwell: Shaped to support smoother magazine insertion.
- Assembly details: Threaded bolt catch pin and rear takedown detent spring channel.
- Standard fitment: Accepts MIL-SPEC AR-15 lower parts and compatible uppers; selector markings indicate Safe and Fire.
- Made in the USA: Aero Precision manufacturing.
This stripped lower receiver is regulated and ships only to a valid Federal Firearms License holder. Buyers are responsible for confirming eligibility and compliance with all applicable laws. Consult a qualified gunsmith regarding specialized configurations, and verify local requirements before ordering. Order communication is sent through sales@rra2a.com.
