Orthos Arms Raider S4 Elite Holt Works 12Ga 18
The Orthos Arms Raider S4 Elite is a 12-gauge semi-automatic shotgun built for shooters who demand performance without compromise. This gas-operated 12ga features an 18.5-inch chrome-lined barrel, T6 7075 hardened aluminum receiver, and a compact 40-inch overall length (stock collapsed)—making it equally at home in tight quarters or on the range. Whether you're running tactical drills, competing in 3-gun, or setting up a home-defense platform, the Raider S4 Elite delivers the ergonomics and modularity modern shotgunners expect.
Recoil management is front and center here. The adjustable carbon-fiber stock incorporates Orthos's proprietary SHOCK FORCE recoil system—a feature designed to keep your shoulder comfortable even when cycling 3-inch magnum loads. An adjustable cheek pad lets you dial in the perfect sight picture, while the oversized charging handle and enhanced bolt release make operation smooth under stress. The top-mounted Picatinny rail and MLOK handguard give you a clean platform for optics and accessories; furniture comes from a partnership with Black River Manufacturing and is finished in multi-tone Cerakote for durability and looks.
Sighting options include ghost-ring iron sights paired with Orthos's FIBERTRON LED front sight—a fiber-optic design with an integrated LED for target acquisition in low light. An angled, three-piece modular vertical grip with MLOK slots, rubber overmolded controls, and front and rear sling mounts round out the package. Right out of the box you get the shotgun, a combat sling, a breacher choke tube, and the full manual.
Key Features
- Gas-operated semi-automatic action with reliable cycling across 2.75-inch and 3-inch loads
- Proprietary SHOCK FORCE recoil reduction system integrated into adjustable carbon-fiber stock
- Adjustable cheek pad for custom fit and sight alignment
- T6 7075 aluminum receiver paired with 4140 chrome-lined barrel for durability
- Top Picatinny rail and MLOK handguard for lights, lasers, and optics
- FIBERTRON LED fiber-optic front sight with ghost-ring rear for fast target acquisition
- Enhanced oversized charging handle and bolt release for rapid operation
- Angled three-piece modular vertical grip with MLOK rail interface
- Front and rear sling attachment points
- Compact 40-inch length when stock is collapsed
Specifications
| Gauge | 12 |
| Action | Gas-operated semi-automatic |
| Chamber | 3" and 2.75" |
| Barrel Length | 18.5 inches |
| Barrel Material | 4140 full steel, chrome lined |
| Choke | Benelli standard (breacher choke included) |
| Capacity | 6+1 (3" shells) or 7+1 (2.75" shells) |
| Receiver | T6 7075 hardened aluminum |
| Stock | Carbon fiber, adjustable comb with SHOCK FORCE recoil system |
| Cheek Pad | Adjustable |
| Handguard | MLOK aluminum |
| Rail System | Top-mounted Picatinny rail |
| Sights | Ghost ring rear, FIBERTRON LED fiber-optic front |
| Grip | Angled three-piece modular vertical grip with MLOK rail grips, rubber overmolded |
| Charging Handle | Advanced oversized |
| Bolt Release | Large enhanced lever |
| Safety | Oversized switch |
| Ejector | Spring-assist |
| Sling Mounts | Front and rear |
| Finish | Multi-tone Cerakote |
| Overall Length | 40 inches (stock collapsed) |
| Weight | 9.5 lbs |
| Included Accessories | Combat sling, breacher choke tube, FIBERTRON LED front sight, adjustable stock with SHOCK FORCE system, owner's manual |
Frequently Asked Questions
What ammunition does the Raider S4 Elite accept?
The Raider S4 Elite is chambered for both 2.75-inch and 3-inch 12-gauge shotshells. Magazine capacity varies: you'll get 6+1 rounds with 3-inch ammo, or 7+1 with 2.75-inch rounds.
Is the stock adjustable, and how does the SHOCK FORCE system work?
Yes. The adjustable carbon-fiber stock includes an integrated SHOCK FORCE recoil system designed to reduce felt recoil across the full range of 12-gauge loads, including 3-inch magnums. The adjustable cheek pad lets you fine-tune comb height for proper sight alignment.
What comes in the box?
The shotgun ships with a combat sling, a breacher choke tube, the FIBERTRON LED fiber-optic front sight, the adjustable stock with integrated SHOCK FORCE system, and an owner's manual. The shotgun accepts Benelli-standard chokes.
Can I add optics and lights to this shotgun?
Absolutely. The Raider S4 Elite features a top-mounted Picatinny rail for scopes and red-dot sights, plus MLOK slots on the aluminum handguard and grip for lights, lasers, and other tactical accessories.

