The Spikes Tactical STU5035S2S Complete Upper delivers a ready-to-build AR-15 platform enhancement with a 16" chrome-moly barrel chambered in 5.56x45mm NATO, featuring a midlength gas system for smooth reliability and optimal gas operation. This complete upper pairs a durable 7075-T6 aluminum black receiver with a black phosphate finish to resist wear and maintain a clean, professional appearance, while the 12" SAR3 free-floating handguard provides superior rigidity and accuracy by minimizing external contact with the barrel. Designed for optic-ready performance, this upper yields a versatile platform for precision shooting or tactical applications, enabling you to mount optics and accessories without the constraint of fixed irons. The combination of a 1:7" twist rate ensures stable stabilization of a wide range of 5.56 ammunition, and the handguards clean, black finish complements the overall silhouette of an AR-15 build. Whether youre upgrading a sport rifle or assembling a dedicated upper for competition or duty-use scenarios, Spikes Tacticals STU5035S2S offers dependable components, proven craftsmanship, and a seamless path to enhanced performance in a compact, integrated package.