The Spike's Tactical Billet Upper Gen2 Mil-Spec Receiver is a precision-machined upper receiver built for shooters who demand reliability and tight tolerances in their AR-15 platform rifle. Machined from billet aluminum rather than forged, this Gen2 upper gives you a solid foundation for everything from precision shooting and hunting to tactical courses and competition. It's chambered in 223 Remington/5.56 NATO, the standard cartridge for the platform, and uses a mil-spec barrel nut for straightforward compatibility with standard AR barrels and components.

Spike's Tactical is known for attention to detail and quality control—this billet construction approach means each upper is machined from solid stock, which can offer tighter tolerances and consistency across production runs. The Gen2 designation indicates this is Spike's refined version of the design, incorporating lessons learned from the first generation. Whether you're building a precision rifle or upgrading an existing lower receiver, a quality upper receiver is where accuracy and reliability begin.

The mil-spec barrel nut ensures you can source barrels from any major manufacturer without fitment hassles, keeping your build flexible and future-proof. Black finish is classic and professional—it'll blend with most aftermarket handguards and optics mounting systems.