M4E1 Stripped Lower Receiver – Anodized Black

The M4E1 Lower Receiver delivers billet aesthetics in a forged package. This custom designed enhanced forging is machined from 7075-T6 Aluminum and compatible with all mil-spec AR15 parts. Aside from the visual upgrades this custom engineered design provides that challenge much more expensive billet options, we have added several functional features to the lower receiver to simplify the assembly process for the at home builder.

M4E1 Lower Receiver Improvements:

• Threaded Bolt Catch Roll Pin – Allows for simple installation of the bolt catch and virtually eliminates the chance to damage the finish during installation (pin included). 1/16″ Hex Key required for assembly.
• Integrated Trigger Guard – Eliminates the possibility of breaking the trigger guard tabs by integrating the trigger guard into the lower, 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 user 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 flare of the magwell 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.

Aero Precision lower

Aero Precision is a well-respected manufacturer in the firearms industry, particularly known for its high-quality AR-15 and AR-10 components. One of their standout products is the Aero Precision lower receiver, which serves as the foundational part of any AR-style rifle.

Design and Features

Aero Precision lower receiver are engineered with precision and attention to detail. Typically made from high-strength aluminum, they feature a robust design that balances durability and weight. Aero’s lowers are often forged, ensuring structural integrity while maintaining a lightweight profile. Many models also come with a flared magazine well, which facilitates faster magazine changes, a desirable feature for competitive shooting and tactical applications.

One of the notable features of Aero Precision lower is their compatibility with a wide range of parts and accessories. They follow the standard specifications set by the ATF and other regulatory bodies, making them compatible with most AR-15 and AR-10 parts from various manufacturers. This versatility allows builders to customize their rifles according to personal preferences and performance needs.

Anodized Finish and Aesthetics

Aero Precision lower typically come with a hard coat anodized finish, enhancing corrosion resistance and durability while providing a sleek, professional appearance. They offer various color options, including black, FDE (Flat Dark Earth), and other Cerakote finishes, allowing users to choose a style that fits their aesthetic.

Features for Ease of Use

Many Aero Precision lower include integrated features that enhance usability. For example, some models have built-in QD (Quick Detach) sling mounts, ambidextrous controls, and enhanced trigger guards for ease of use, especially with gloves. These thoughtful additions contribute to a more user-friendly experience.

Popularity and Reputation

Aero Precision lower have gained a strong following among both amateur and professional builders. Their commitment to quality and performance has established them as a go-to option for those looking to assemble custom rifles. The company’s attention to detail and customer service also contribute to their positive reputation in the firearm community.

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