Aero Precision M4E1 Stripped Lower Receiver - Anodized Black (BLEM)

Aero Precision M4E1 Stripped Lower Receiver – Anodized Black (BLEM)

THIS PRODUCT IS BLEMISHED. BLEMISHES MAY INCLUDE:

• Plating inconsistencies
• Pits
• Scratches
• Dents
• Flaws in finish

Our blemished products are fully functional and warrantied by the manufacturer; they just didn’t meet Aero Precision’s high standards. They are a great product at a discounted price for someone who doesn’t mind a slight imperfection. We do not accept returns on blemished products.

The Aero Precision M4E1 Stripped Lower Receiver is a high-quality foundation for any AR-15 build, offering superior strength, precision machining, and a sleek, modern design. Engineered from 7075-T6 forged aluminum, this lower receiver provides enhanced durability while maintaining a lightweight profile, making it a top-tier choice for custom rifle builds, duty use, and competition shooting.

Unlike standard mil-spec lowers, the M4E1 features an integrated trigger guard, eliminating the need for roll pins while reinforcing structural integrity. The flared magwell enhances magazine changes, ensuring faster reloads in high-pressure scenarios. Additionally, the threaded bolt catch roll pin design simplifies assembly, reducing the risk of damage during installation.

The hardcoat anodized black finish not only enhances aesthetics but also provides superior corrosion resistance and long-term durability, ensuring that the lower withstands heavy use and harsh conditions. Designed for seamless compatibility with mil-spec components, this stripped lower is an excellent choice for builders looking for reliability and precision.

M4E1 LOWER RECEIVER IMPROVEMENTS:

• Threaded Bolt Catch Roll Pin—This pin allows for simple installation of the bolt catch and virtually eliminates the chance of damaging the finish during installation (pin included).
• Integrated Trigger Guard—By integrating the trigger guard into the lower, the possibility of breaking the tabs is eliminated, creating a stronger, more rigid platform to build upon.
• Upper Tension Screw – Allows users to fine-tune the fit of the upper and lower receiver using a nylon-tipped tensioning set screw inserted in the grip tang of the lower receiver. This provides a tight fit with any standard AR15 upper receiver.
• Threaded Takedown Pin Detent Recess – Allows users to easily install the Takedown Pin detent and spring with the use of a 4-40 set screw (no more launching detents across the room).
• Increased Magwell Flare – Increased the magwell flare to aid in quick and efficient magazine changes.
• Marked and milled to accept short-throw safety selectors but will work with standard selectors as well.

INCLUDES:

• Stripped M4E1 Lower Receiver
• Nylon-tipped tensioning set screw
• Threaded Bolt Catch Pin