Spike's Gadsden Set 5.56 NATO 9" FDE Rifle

The Spike's Tactical Gadsden Set SAR3 is a semi-automatic rifle receiver set chambered in .223 Remington/5.56 NATO, built for operators, law enforcement, and serious precision shooters who demand a modular platform for custom rifle builds. This matched upper and lower receiver set provides the foundation for a fully functional rifle while the integrated SAR3 rail system delivers a modern, versatile mounting solution for optics, lights, and targeting devices.

The SAR3 rail configuration offers a Picatinny-compatible mounting interface that accommodates both legacy and modern accessory ecosystems, critical for operators who rotate equipment across multiple platforms or need rapid reconfiguration in the field. The .223 Remington/5.56 NATO cartridge remains the standard for law enforcement patrol rifles and designated marksman applications, delivering flat trajectory, minimal recoil drift, and proven terminal performance at tactical ranges. At 2.5 pounds, this receiver set is purpose-built to integrate with quality barrels, stocks, and fire control groups to create a rifle suited for duty, training, or competition use.

This set is ideal for gunsmith builds, agency procurement, or individual operators building a precision rifle from verified quality components. The receiver set serves as the serialized base for your build, allowing you to source barrel length, trigger group, and furniture to match your specific mission profile—whether that's CQB-optimized carbine work, medium-range precision shooting, or training-heavy applications where configuration flexibility matters.

The Gadsden branding reflects Spike's Tactical's commitment to American manufacturing and the builder community. This receiver set requires completion with a barrel, bolt carrier group, charging handle, trigger group, buffer system, and stock to function as a complete rifle—standard practice for serious rifle builds where component selection directly impacts accuracy and reliability.