Spike's Stripped Upper/lower Set Spi

The Spike's Stripped Upper/Lower Set STS1019 is the foundation platform for builders who demand precision and reliability in custom rifle builds. Whether you're assembling a duty rifle, competition platform, or purpose-built tactical system, this matched set provides the critical receiver components that define accuracy, durability, and fit. Stripped receivers offer experienced builders complete control over component selection and final assembly, eliminating factory compromises while reducing overall cost compared to complete barreled uppers or finished lowers.

Spike's Tactical manufactures these receivers using precision machining and heat-treated steel to meet mil-spec tolerances, ensuring dimensional consistency and long-term durability under sustained fire. The stripped configuration means the receiver set arrives without trigger group, charging handle, bolt carrier group, or barrel—giving you the flexibility to source components that match your intended use profile, whether that's enhanced trigger performance, caliber conversion, or specialized barrel geometry. At 1.44 lbs, this receiver set provides a solid, lightweight foundation that won't compromise your final rifle's handling characteristics or modularity.

Law enforcement armorers, military personnel, and serious civilian builders favor Spike's Tactical receivers for their tight tolerances and proven track record in high-round-count applications. This matched upper and lower pairing ensures proper fit and function when combined with quality internal components and a properly fitted barrel. Installation of remaining components requires standard gunsmithing tools and mechanical knowledge; builders should confirm all parts meet their local and federal legal requirements before final assembly.