80% Lower Patriot Pack

Product Overview

The 80% Lower Patriot Pack is the definitive solution for the dedicated firearms enthusiast who refuses to be limited to a single platform. This comprehensive bundle provides you with the foundational components to undertake three distinct build projects: the classic AR-15, the larger-frame AR-10, and the popular pistol-caliber AR-9. Each receiver in this pack is an 80% lower, meaning it is not legally considered a firearm until you complete the final machining steps, offering you a deeply personal and educational gunsmithing experience. This pack is designed for the builder who values versatility, understands the nuances of different AR platforms, and seeks a project that spans the full spectrum of modern sporting rifle applications, from precision distance shooting to compact close-quarters configurations.

Key Features

• Complete Platform Coverage: One pack includes 80% lowers for the AR-15 (5.56/.223), AR-10 (.308), and a dedicated, threaded 9mm AR-9 lower, allowing for builds across the most popular calibers and formats.
• Premium Forged Aluminum Construction: Each lower is machined from forged 7075-T6 aluminum, the same mil-spec material used in duty-grade firearms, ensuring exceptional strength-to-weight ratio and long-term durability.
• Precision-Anodized Finish: The anodized surface provides a hard, wear-resistant layer that protects the underlying aluminum from corrosion and abrasion, offering a professional, ready-for-cerakote base.
• Dedicated 9mm Design: The included AR-9 lower is engineered specifically for the 9mm cartridge, featuring a threaded bolt catch pin hole for reliable magazine compatibility and feeding, a critical detail for a smooth-running pistol-caliber build.
• 100% Mil-Spec Geometry: Featuring a broached magwell and standard fire/safe markings, these lowers guarantee compatibility with the vast ecosystem of AR parts, triggers, grips, and stocks, simplifying your build process.
• Project-Focused Value: By bundling three essential receivers, this pack offers significant value over individual purchases, representing a long-term investment in your building hobby and toolkit.

Performance & Applications

The true value of the Patriot Pack is realized in the specialized performance of each completed platform. This isn’t about having three similar rifles; it’s about possessing tools optimized for distinct tasks.

First, the AR-15 lower serves as the backbone for a versatile, lightweight rifle ideal for dynamic shooting sports, varmint control, or a dependable home defense option chambered in 5.56 NATO. Second, the AR-10 lower allows you to build a serious precision rifle or a powerful hunting platform for medium to large game, capable of engaging targets at extended ranges with .308 Winchester or similar cartridges. Finally, the dedicated 9mm lower unlocks the world of pistol-caliber carbines. A completed AR-9 is renowned for its low recoil, affordability to shoot, and compatibility with common pistol magazines, making it an exceptional choice for recreational plinking, competitive PCC divisions, or a highly maneuverable truck or home firearm.

About Our Sourcing & Standards

The components we offer are selected through a rigorous process that prioritizes technical specification adherence and manufacturing integrity. We partner with established, U.S.-based machining facilities that utilize certified materials and advanced CNC processes. Our focus is on dimensional accuracy—like ensuring proper thread pitch and magazine well alignment—because these details are what separate a reliable firearm from a problematic one. We provide these detailed specifications so builders, from novices to experts, can make informed decisions based on engineering and fit, not just appearance. Our role is to curate and supply parts that meet the high standards demanded by the building community.

Why Buy From Imbert Smither Arms

Located in SAN CARLOS, CA, Imbert Smither Arms operates with a clear focus on serving the knowledgeable builder. We distinguish ourselves by providing precise product information and maintaining a curated selection of components for specialized projects. Our approach is technical and straightforward, avoiding unnecessary hype. We understand the importance of compliance and provide products and information with that in mind. You will find our communications reflect an understanding of niche product categories, from platform-specific lowers to other precision components, always emphasizing lawful and responsible use.

Make Your Decision

The 80% Lower Patriot Pack is a commitment to the craft of building. It is for those who see a collection of identical rifles as a missed opportunity. With this pack, you embark on a journey to create three fundamentally different firearms, each with its own purpose and personality, all starting from the same high-quality foundation. Assess your workshop readiness, research your local regulations regarding firearm manufacturing, and consider the long-term value of engaging with multiple AR platforms. If your goal is to expand your capabilities and your collection in one thoughtful purchase, this pack provides the material to begin.

Technical Specifications

Frequently Asked Questions