Orthos Arms Raider S4 Elite Alpine 12Ga 18

The Orthos Arms Raider S4 Elite Alpine is a 12-gauge semi-automatic shotgun built for shooters who demand modern ergonomics, low recoil, and reliable performance. This gas-operated 18.5-inch barrel model pairs a T6 7075 hardened aluminum receiver with a 4140 chrome-lined steel barrel to create a durable platform that handles both 2¾-inch and 3-inch magnum loads. Whether you're working a defensive role, running dynamic shotgun courses, or hunting, the Raider S4 Elite Alpine delivers the comfort and control serious shooters expect.

The standout feature here is Orthos's patented SHOCK FORCE recoil system, integrated into the adjustable carbon fiber stock. This isn't an afterthought—it's engineered to tame magnum recoil so you stay on target and shoot with less fatigue across extended sessions. The adjustable cheek pad lets you dial in your sight picture and ergonomics to your frame and shooting style. An oversized charging handle and large enhanced bolt release make gun handling smooth and intuitive, even under stress or in gloved conditions. The FIBERTRON LED fiber optic front sight pairs a subtle light-up element with a ghost ring rear sight for quick target acquisition in varied lighting.

The platform is modular by design. A top-mounted Picatinny rail accepts optics or magnified sights, while the angled 3-piece modular vertical grip and MLOK aluminum hand guard give you room to mount lights, lasers, or other accessories. Factory furniture comes courtesy of Black River Manufacturing, and the rubberized overmolded grip ensures secure purchase even when wet. Capacity is 6+1 for 3-inch shells or 7+1 for 2¾-inch rounds. A combat sling comes standard, and the breacher choke tube ships in the box alongside the manual.

All of this is finished in Alpine Camo Cerakote—a professional coating that blends function and aesthetics. Weight is 9.5 lbs, and the stock collapses to 40 inches overall length, making the Raider S4 Elite Alpine manageable in tight spaces without sacrificing sight radius or accessory rail real estate.

Key Features

• Patented SHOCK FORCE recoil system reduces felt recoil and muzzle climb on magnum loads
• Adjustable carbon fiber stock with customizable cheek pad for proper sight alignment and shooter comfort
• FIBERTRON LED light-up fiber optic front sight paired with ghost ring rear for low-light target acquisition
• Oversized charging handle and enhanced bolt release for fast, reliable cycling
• Top Picatinny rail and MLOK hand guard for mounting optics and accessories
• T6 7075 hardened aluminum receiver and 4140 chrome-lined steel barrel for durability
• Angled 3-piece modular vertical grip with ergonomic design
• Accepts both 3-inch and 2¾-inch ammunition with tool-free choke swaps
• Combat sling, breacher choke tube, and adjustable stock included
• Alpine Camo Cerakote finish with rubber overmolded grip

Specifications

Frequently Asked Questions

What recoil management features does the Raider S4 Elite Alpine have?

The shotgun comes standard with Orthos's patented SHOCK FORCE recoil system, integrated into the adjustable carbon fiber stock. This system reduces felt recoil and muzzle climb, allowing you to manage 3-inch magnum loads comfortably and stay on target for follow-up shots.

Can I mount an optic or red dot on this shotgun?

Yes. The Raider S4 Elite Alpine includes a top-mounted Picatinny rail that accepts any standard optic, red dot, or magnified sight. The hand guard also features MLOK slots for mounting lights, lasers, or other accessories.

What ammunition does this shotgun fire?

The Raider S4 Elite Alpine is chambered in 12 gauge and accepts both 3-inch and 2¾-inch shells. Magazine capacity is 6+1 for 3-inch rounds or 7+1 for 2¾-inch ammunition.

What comes in the box with this shotgun?

The Raider S4 Elite Alpine includes the shotgun itself, a combat sling, the adjustable stock with SHOCK FORCE recoil system, the FIBERTRON LED fiber optic front sight, a breacher choke tube, and an owner's manual.