Designed for steady, repeatable performance in varied environments, the Spikes Tactical SPIKE'S FLAT TOP UPPER 9MM BLK emphasizes functional reliability and straightforward operation. Developed with attention to component fit and workflow efficiency, it supports smooth handling and consistent mechanical behavior. Ideal for range training and recreational shooting, this upper receiver is crafted from 7076 T6 aluminum and features a shell deflector and ejection port door. Spike's Tactical is renowned for its commitment to high-quality products and ongoing innovation.