Expo Arms delivers precision-engineered AR-15 parts and accessories designed to meet the demands of serious shooters and builders. Every component in our lineup—from complete uppers and lowers to individual parts and accessories—is proudly manufactured in the USA and assembled with meticulous attention to detail in our Texas facility. As an exclusive brand of Primary Arms, Expo Arms combines accessible pricing with uncompromising quality, ensuring that whether you’re building your first AR-15 or upgrading an existing platform, you have access to reliable, American-made components that perform when it matters most.

Our complete upper and lower receivers form the foundation of countless custom builds across the country, trusted by both recreational shooters and professionals who demand consistency and durability. Each Expo Arms upper and lower undergoes rigorous quality control processes in our Texas assembly facility, where skilled technicians ensure proper fitment, finish, and function before shipping. From mil-spec forged receivers to enhanced models featuring improved ergonomics and ambidextrous controls, Expo Arms offers the building blocks you need to create an AR-15 that matches your exact specifications and shooting style.