Description
The Aero Precision M4E1 is a stripped lower receiver machined from 7075-T6 aluminum forgings. The Type III hard coat anodizing meets MIL-A-8625 specifications for wear resistance. The lower is marked for multi-caliber use and features an integrated trigger guard.
Tolerances are held to standard AR-15 specifications for compatibility with mil-spec upper receivers. The fire control group pocket is cut to accept standard AR-15 triggers and hammers. The threaded bolt catch roll pin hole eliminates drift pin installation.
This lower will accept any mil-spec AR-15 upper receiver with proper pin alignment. It is compatible with standard buffer tubes, pistol grips, and trigger groups. The threaded rear takedown pin detent channel simplifies assembly.
This is a serialized firearm component that requires FFL transfer. We ship to your chosen FFL holder after purchase verification. No tools or parts are included with the stripped lower.
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