The Orthos Arms Raider S4 Black is a gas-operated 12 Gauge semi-automatic shotgun built around a combination of modern controls, adjustable ergonomics and Orthos Arms' patented SHOCK FORCE recoil system. Finished in black Cerakote, the Raider S4 features an 18.5-inch 4140 steel barrel, M-LOK aluminum handguard and T6 7075 hardened aluminum receiver. The patented SHOCK FORCE recoil system is integrated into the adjustable stock and is designed to reduce felt recoil, including when using 3-inch magnum shells. An adjustable cheek pad allows the shooter to customize the fit, while the rubber-overmolded grip provides a secure interface. The Raider S4 also features Orthos Arms' FIBERTRON LED fiber optic front sight. A small LED illuminates the fiber optic element, providing a visible aiming reference, while the ghost-ring rear sight completes the sighting system. An oversized safety switch, large enhanced bolt release and advanced oversized charging handle provide enlarged controls for straightforward operation. A top-mounted Picatinny rail provides an interface for compatible accessories, while the M-LOK aluminum handguard adds additional mounting positions. The shotgun includes a combat sling, breacher choke tube and owner's manual. Specifications Model: Raider S4 Black SKU: S4RBK Gauge: 12 Gauge Action: Gas-operated semi-automatic Chamber: 3" / 2 3/4" Capacity: 6+1 with 3" shells; 7+1 with 2 3/4" shells Barrel: 18.5" 4140 full-steel, smooth, chrome-lined Choke: Benelli Standard Receiver: T6 7075 hardened aluminum Receiver Finish: Black Cerakote Handguard: M-LOK aluminum Top Rail: Picatinny Stock: Adjustable with SHOCK FORCE recoil system Cheek Pad: Adjustable Grip: Rubber overmolded Grip Configuration: Angled 3-piece modular vertical grip with M-LOK rail grips Charging Handle: Advanced oversized Bolt Release: Large enhanced lever Ejector: Spring-assisted Trigger: Advanced trigger Safety: Oversized safety switch Sights: Ghost ring rear with FIBERTRON LED fiber optic front sight Sling Mounts: Front and rear Sling: Combat sling Overall Length: 40" with stock collapsed Weight: 9.5 lbs. Warranty: Lifetime SHOCK FORCE Recoil System The Raider S4 comes standard with Orthos Arms' patented SHOCK FORCE recoil system integrated into its adjustable stock. The system is designed to improve shooting comfort and is specified for use with 3-inch magnum shells. FIBERTRON LED Front Sight The patented FIBERTRON LED front sight combines a fiber optic aiming reference with a small LED light source. This illuminated fiber optic element works with the ghost-ring rear sight to provide the Raider S4's factory sighting system. Adjustable Ergonomics The Raider S4 features an adjustable stock and adjustable cheek pad, allowing the shooter to configure the fit of the shotgun. The rubber-overmolded grip and three-piece modular grip configuration add additional ergonomic features to the platform. Modern Mounting and Controls An M-LOK aluminum handguard provides mounting positions for compatible accessories, while the top-mounted Picatinny rail provides an additional accessory interface. The oversized safety, advanced oversized charging handle and large enhanced bolt release provide enlarged controls. Included Components The Raider S4 includes a combat sling, breacher choke tube, patented FIBERTRON LED fiber optic front sight, adjustable stock with SHOCK FORCE recoil system and owner's manual. Ammunition and Break-In Orthos Arms recommends ammunition producing 1,250 FPS or higher for consistent cycling. For the stated break-in procedure, the manufacturer recommends 50 rounds of high-brass heavy loads producing 1,300 FPS or higher. Follow the manufacturer's current recommendations and operating instructions for break-in and ammunition selection. Get the Orthos Arms Raider S4 Black 12 Gauge Shotgun at BattleHawk Armory!