RIFLE: SPIKE'S TACTICAL MODEL ST15 - RIFLE, SERIAL NUMBER 106954, BLACK (MATTE), CASE NOT INCLUDED, SEMI - AUTOMATIC, 223 REMINGTON, 18 Notes: The Spike's Tactical ST-15 is a semi-automatic rifle chambered in .223 Remington, built on the AR-15 platform for reliability and consistent performance. This configuration features an 18-inch barrel, offering improved accuracy and velocity compared to standard 16-inch setups, making it a strong option for range shooting or precision-focused use. Constructed with a forged aluminum receiver and mil-spec components, the ST-15 is known for durability and dependable function. It typically includes a flat-top receiver ready for optics, an adjustable stock, and quality internal components.