Experience precision with every shot with the Complete Upper 16" M4 Flat Top. Ideally suited for both 223 Rem and 5.56 NATO rounds, this robust receiver ensures you're ready for both range training and field action. The 16" barrel is optimized for balance and accuracy, while the A3 flat top provides a sturdy platform for optics. Equipped with the reliable A2 front sight, targeting is straightforward and effective. Take for instance, John, an avid sportsman, who uses it for both his recreational weekend target practices and in competitive shooting events; he values its consistent performance and adaptability. Perfect for enthusiasts who pursue reliability and precision.