Aero Precision RL556v3 80% AR15 Lower – Black

Description

Product Overview

The Aero Precision RL556v3 80% AR15 Lower Receiver in Black is a high-quality, unfinished component designed for the experienced firearms enthusiast who enjoys the process of custom creation. This product falls into the category of an 80% lower, meaning it is not a firearm as sold and requires machining to completion. It is engineered for individuals who seek a personalized AR-15 platform build, offering a perfect project for hobbyists, sportsmen, and those interested in understanding the mechanical intricacies of their rifle. The primary use of the completed RL556v3 lower is to serve as the foundational frame for a custom AR-15, suitable for a range of lawful applications from recreational target shooting to competitive sports.

Key Features

• Durable Polymer Composite Construction: Built from Polymer80’s proprietary, high-strength polymer, this lower receiver offers a significant reduction in weight compared to traditional aluminum counterparts while maintaining robustness and durability for reliable performance.
• Solid Core Design & Reinforced Buffer Tube Housing: The solid core design and intentionally beefed-up mil-spec buffer tube housing area enhance structural integrity, ensuring the lower can withstand the repeated stresses of firing and cycling.
• Flared Magwell for Efficient Reloads: The integrated flared magwell is designed to facilitate faster and smoother magazine insertion, a critical feature for competitive shooting or training scenarios where speed and precision matter.
• Unique Threadless Pistol Grip Design: This lower features a specific threadless design in the pistol grip area, engineered for seamless compatibility with Polymer80’s rifle grip modules, creating a clean, integrated look and feel.
• Complete Machining Kit Included: Each unit comes with a dedicated polymer jig, a trigger hole drill guide, and the necessary drill bits and end mill, providing the essential tools required to professionally complete the receiver to 100%.
• Multiple Color Options: Available in several finishes including Black, Flat Dark Earth (FDE), OD Green, Gray, and White, allowing for personalization and color-matching to complete your unique build aesthetic.

Performance & Applications

The completed RL556v3 lower is built to host standard mil-spec AR-15 components, allowing for immense customization. Once paired with a suitable upper receiver, barrel, and internal parts, it forms a reliable platform for various disciplines.

Custom Lightweight Builds: The polymer frame material makes this lower an ideal choice for builders aiming to construct a lightweight AR-15. This is particularly advantageous for long-range hunting trips, extended training sessions, or any application where reducing overall rifle weight is a priority without sacrificing core strength.

Dedicated Training and Recreational Rifle: Its durable design and user-friendly features like the flared magwell make it an excellent candidate for a dedicated training rifle. Enthusiasts can build a platform specifically for high-round-count practice, 3-gun competition, or general recreational shooting at the range, benefiting from the lower’s ergonomic design.

Specialized Project Firearm: For the hobbyist who values the build process itself, the RL556v3 serves as the centerpiece of a detailed personal project. It allows for a deep understanding of the AR-15 platform’s function and offers the satisfaction of creating a one-of-a-kind firearm tailored to specific ergonomic preferences and visual tastes.

About Aero Precision

Aero Precision has established itself as a leading authority in the firearms manufacturing industry, renowned for its commitment to precision engineering, rigorous quality control, and innovative design. With decades of experience, Aero Precision operates state-of-the-art manufacturing facilities where they produce critical components for both civilian and military applications. Their expertise in metallurgy and machining is widely respected, and their collaboration with Polymer80 on the RL556v3 lower brings that same standard of quality and design consideration to the polymer receiver space. Choosing an Aero Precision product means investing in a component backed by a brand with a proven track record of reliability, adherence to strict specifications, and a deep understanding of what shooters and builders need from their equipment.

Make Your Decision

The Aero Precision RL556v3 80% Lower represents a thoughtful blend of innovative polymer engineering and practical, user-focused design. It is a serious component for the informed builder looking for a lightweight, durable foundation for a custom AR-15. By selecting this lower, you are choosing a project that emphasizes the integration of modern materials with proven platform geometry, supported by a comprehensive included kit for completion. Evaluate your build goals, consider the advantages of the polymer construction and integrated features, and decide if this is the right foundation for your next custom rifle project.

Technical Specifications

Frequently Asked Questions