The Orthos Raider S4 is a 12-gauge semi-automatic shotgun designed for versatility and performance. It features an 18.5" chrome-lined steel barrel, accommodating both 3-inch and 2¾-inch shells, with a 6+1 capacity. The shotgun is equipped with Orthos Arms' patented SHOCK FORCE recoil system, significantly reducing felt recoil, even with 3-inch magnum loads, enhancing shooting comfort. An adjustable carbon fiber stock with an adjustable cheek pad allows for a personalized fit, improving user ergonomics. For enhanced handling, the Raider S4 includes an angled three-piece modular vertical grip with M-LOK rail grips, providing a secure hold and customization options. The top-mounted Picatinny rail facilitates the attachment of optics and accessories, increasing adaptability for various shooting scenarios. The shotgun is fitted with a ghost ring rear sight and Orthos Arms' patented FIBERTRON LED fiber-optic front sight, which subtly illuminates for improved target acquisition in low-light conditions. Additional features include an oversized charging handle and bolt release for effortless operation, a spring-assisted ejector, and an oversized safety switch, all contributing to the firearm's user-friendly design. The Orthos Raider S4 is available in various color options, including Stealth Gray, OD Green, and Flat Dark Earth, allowing users to choose a finish that suits their preferences. For optimal performance, a break-in period of 50 rounds of high-brass ammunition (1,300 FPS or higher) is recommended to ensure smooth cycling with various loads. The shotgun comes with a lifetime warranty, underscoring its durability and the manufacturer's commitment to quality.