# Orthos Arms Raider S4 12 Gauge 18.5in Black

**Brand:** Orthos Arms
**Category:** Semi-Automatic Shotguns
**Caliber:** 12 Gauge

## Specifications

- **Caliber:** 12 Gauge
- **Barrel Length:** 18.5"
- **UPC:** 850039520587
- **SKU:** UCExr5CSB

## Description

The Orthos Arms Raider S4 is a semi-automatic 12-gauge tactical shotgun with an 18.5-inch barrel, 3-inch chamber, and a 6+1 round capacity. It has an M-LOK forend and comes in black.

### Key Specifications
- **Brand**: Orthos Arms
- **Model**: Raider S4
- **Caliber**: 12 Gauge
- **Action**: Semi Auto
- **Capacity**: 6+1 rounds
- **Barrel Length**: 18.5 inches
- **Color/Finish**: Black

### Detailed Features
- M-LOK forend for accessory attachment
- 3-inch chamber
- 18.5-inch barrel in a compact tactical package
- 6+1 capacity
- Semi-automatic action

## Frequently Asked Questions

**Q: What caliber is the Raider S4?**

A: The Raider S4 is chambered in 12 Gauge with a 3-inch chamber.

**Q: Who makes the Raider S4?**

A: The Raider S4 is made by Orthos Arms.

**Q: What type of firearm is the Raider S4?**

A: It is a semi-automatic shotgun in a tactical configuration.

**Q: What is the barrel length of the Raider S4?**

A: The Raider S4 has an 18.5-inch barrel.

**Q: How many rounds does the Raider S4 hold?**

A: It holds 6+1 rounds.

**Q: Does the Raider S4 have an M-LOK forend?**

A: Yes, the Raider S4 has an M-LOK forend for accessory attachment.

**Q: Where can I buy the Raider S4?**

A: Compare current vendor offers on this page.

## What Reviewers Say

*Quoted verbatim from YouTube reviews. Each link opens the video at the moment quoted.*

> This thing shot very smoothly. It's a lot softer shooting than I anticipated.
>
> — [Tactical Toolbox](https://www.youtube.com/watch?v=Avhcqtrjbxs&t=1004s)

> With the recoil impulse on the Orthos, it felt incredibly soft shooting and honestly, I think a lot of it had to do with the porting.
>
> — [Tactical Toolbox](https://www.youtube.com/watch?v=Avhcqtrjbxs&t=1189s)

> Note that I had zero malfunctions with this throughout those 39 rounds.
>
> — [Tactical Toolbox](https://www.youtube.com/watch?v=Avhcqtrjbxs&t=1257s)

> This one was so much more enjoyable to shoot that I found myself not wanting to shoot this one as often as I shot this one.
>
> — [Tactical Toolbox](https://www.youtube.com/watch?v=Avhcqtrjbxs&t=1270s)

## What Customers Say

*AI-generated insights from customer reviews*

The Raider S4 is a newer entry from Orthos Arms, and owner feedback is still accumulating. Early buyers report the M-LOK forend as a practical feature that makes light and sling attachment straightforward without aftermarket modification.

The 6+1 capacity and 18.5-inch barrel combination draws favorable comments from home-defense oriented buyers. A few owners note the brand is unfamiliar and that the lack of an established service network is worth factoring in before purchase.

Cycling reliability with buckshot and slug loads appears consistent in early reports. Some owners flag that the Raider S4 needs a break-in period before it runs lighter field loads cleanly, which is common in this class of semi-automatic tactical shotgun.

## Pricing

**4 offers available**

| Vendor | Price |
|--------|-------|
| Buds Gun Shop | $1259.99 |
| Kygunco Com | $1282.99 |
| Guns Com | $1384.99 |
| Palmettostatearmory Com | $1399.99 |

## Similar Products

- [Orthos Arms Raider S4 12 Gauge 18.5in Camo](https://gunsnation.com/p/orthos-arms-raider-s4-12-gauge-18-5in-camo/UCExr5CTH)
- [Orthos Arms Raider S4 12 Gauge 18.5in FDE](https://gunsnation.com/p/orthos-arms-raider-s4-12-gauge-18-5in-fde/UCExr5CSI)
- [Orthos Arms Raider S4 12 Gauge 18.5in Gray](https://gunsnation.com/p/orthos-arms-raider-s4-12-gauge-18-5in-gray/UCExr5CSO)
- [Orthos Arms Raider S4 12 Gauge 18.5in Alpine Elite](https://gunsnation.com/p/orthos-arms-raider-s4-12-gauge-18-5in-alpine-elite/UCExryeas)
- [Orthos Arms Raider S4 Elite 12 Gauge 18.5in Green](https://gunsnation.com/p/orthos-arms-raider-s4-elite-12-gauge-18-5in-green/UCExryeay)
- [Orthos Arms Raider S4 12 Gauge 18.5in OD Green](https://gunsnation.com/p/orthos-arms-raider-s4-12-gauge-18-5in-od-green/UCExr5CSf)

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*Data from [GunsNation](https://gunsnation.com)*