The Aero Precision M4E1 Pro lower receiver in Kodiak Brown anodized (Aero Precision part no. APAR600032AC) carries ambidextrous controls built into the lower itself, so the bolt catch, magazine release and safety can all be worked without changing your firing hand. The proprietary components come preinstalled, and the lower accepts mil-spec parts, which leaves the rest of the build up to you. It is a strong starting point for a custom AR-15 where handedness and a distinctive finish both matter. The brown anodized color sets it apart from the usual black builds on the range.

Key Specifications

• The platform is AR-15, so it works with standard AR-15 components for the rest of the build.
• The finish is Kodiak Brown anodized, a color finish that gives the build a look well away from black.
• The controls are ambidextrous, with mirrored bolt catch, magazine release and safety operation for either hand.
• A bolt catch assembly is included, so the lower is ready to take a fire control group and the rest of your parts.
• A magazine release assembly is included, which saves sourcing the release separately.
• Compatibility covers mil-spec parts and components, which lets the builder choose the trigger, grip and stock they prefer.
• The lower works with standard AR-15 magazines, so existing magazines carry over to the new build.
• The lower is made in America by Aero Precision.
• The receiver is marked Cal Multi, reflecting its use across multiple AR-15 calibers.
• The style is stripped, a semi-complete lower that leaves the trigger group, grip and buffer system to the builder.

Frequently Asked Questions

Is this lower receiver ambidextrous? Yes. Aero Precision builds ambidextrous controls into the M4E1 Pro lower so the shooter can operate the bolt catch, magazine release and safety without changing the dominant firing hand.

What is included with the lower? The listing covers the M4E1 stripped lower receiver in Kodiak Brown anodized along with a bolt catch assembly and a magazine release assembly.

Does it ship to my home? No. The lower receiver is the serialized part of an AR-15, so it ships to a licensed FFL dealer for transfer.

Buy the Aero Precision M4E1 Pro Lower Receiver, Kodiak Brown Anodized

Choosing a lower is the first decision in an AR-15 build, and this one settles ambidextrous controls and a finish in a single part. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and browse more AR-15 lower receivers while you plan the rest of the parts list.