FN SCAR 20S 6.5 Creedmoor 20in Semi-Auto Rifle 10+1
About this product
The FN SCAR 20S 6.5 Creedmoor is a 20-inch barreled semi-automatic precision rifle chambered in 6.5 Creedmoor, built on FN Herstal's combat-proven short-stroke piston system with non-reciprocating charging handles and a Geissele two-stage trigger. This configuration prioritizes long-range accuracy from a gas-operated platform rather than a traditional bolt-action design, weighing 11.6 pounds unloaded with a 1:8 twist rate barrel. Ironclad Armory exclusively offers this model with a 10-round magazine capacity to ensure compliance in restricted states while maintaining the rifle's intended professional-grade functionality.
What is the FN SCAR 20S 6.5 Creedmoor used for?
This rifle is designed for precision engagements from 600 to 1,200 yards, where its semi-automatic operation provides faster follow-up shots than bolt guns like the Stevens 334 Rifle. The 20-inch cold hammer-forged barrel maintains consistent velocity with 6.5 Creedmoor match ammunition, while the adjustable stock and full-length rail accommodate night vision or high-magnification optics for low-light or extended-range scenarios.
How does the FN SCAR 20S compare to the Stevens 334 in .308 Win?
The SCAR 20S delivers semi-automatic capability at 2.1 pounds heavier than the Stevens 334 Rifle in .308 Win, trading pure bolt-action simplicity for rapid engagement speed. Where the Stevens 334 offers a simpler 7.5-pound platform for basic precision work, the SCAR's monolithic receiver, adjustable gas system, and suppressor-ready threading support sustained fire under adverse conditions—making it better suited for tactical competitions or defensive overwatch roles.
What does it weigh and what are the dimensions?
Unloaded weight is 11.6 pounds (5.26 kg) with an overall length of 40.5 inches—3.2 inches longer than the Stevens 334 due to its extended stock and receiver geometry. The barrel measures 20 inches with a 5/8x24 thread pattern, while the full-length MIL-STD-1913 rail provides 18.5 inches of continuous mounting surface for optics and accessories.
Who is this NOT for?
This rifle isn't for beginners or budget-conscious shooters—the $4,549.99 price tag and 11.6-pound weight demand serious commitment to long-range technique. If you need a lighter hunting rifle or a simple plinking tool, consider the Stevens 334 in .243 Win — our editorial take at nearly one-third the cost, or a Stevens 555 shotgun review for recreational clay shooting.
What's in the box?
You receive one 10-round steel magazine, the rifle with installed Geissele Super SCAR trigger, and a basic operator's manual—no optic, bipod, or case is included. The total shipping weight is approximately 14 pounds due to packaging materials, and the rifle arrives from our warehouse within 3-5 business days for most continental U.S. orders.
Is the FN SCAR 20S worth it at $4,549.99?
At this price, you're paying for military-grade durability and semi-automatic precision that bolt guns can't match—justified if you need rapid engagement beyond 800 yards or compete in tactical divisions. For hunters or recreational shooters who don't require sustained fire, the the Stevens 334 delivers comparable accuracy at $650 without the weight or complexity.
Specs at a glance
Video review
Pros & cons
What works
- Non-reciprocating charging handle allows uninterrupted optic use during operation
- Geissele Super SCAR trigger breaks at 3.5 pounds with minimal overtravel
- Monolithic upper receiver maintains zero better than multi-piece designs
- Adjustable gas system supports suppressed fire without reliability issues
Trade-offs
- Proprietary magazines cost $45 each—$20 more than PMAGs for AR-10 platforms
- 11.6-pound weight limits mobility compared to 7.5-pound bolt actions
- No iron sights included—adds $200-$600 for backup optics or mounts
- 20-inch barrel hinders maneuverability in tight spaces compared to 16-inch models
Expert review
Key attributes
| upc | 845737013677 |
| manufacturer | FN America / FN Herstal |
| manufacturer part number | 381005422 |
| action | Semi-Auto |
| barrel finish | Black |
| barrel length | 20" |
| caliber/gauge | 6.5mm Creedmoor |
| capacity | 10 + 1 |
| number of magazines | 1 10 rd. |
| product type | Rifle |
| safety | Ambidextrous |
| sights | Optic Ready |
| units per box | 1 |
Frequently asked questions
- Is it compatible with standard AR-10 magazines?
- No—the SCAR 20S uses proprietary FN steel magazines due to its different magwell geometry and bolt catch design. You'll need to source additional magazines directly from FN or authorized dealers like Brownells, at approximately $45 per 10-round unit.
- Does it fit in a standard rifle case?
- Yes, but you'll need a 42-inch hard case for safe transport—the rifle measures 40.5 inches overall with stock extended. Plano All-Weather cases work well, while soft bags require additional padding to protect the adjustable cheek piece and rail sections.
- How long does shipping take?
- Most orders ship within 1 business day via FedEx Ground, arriving in 3-5 days to continental U.S. addresses. Alaska, Hawaii, and international shipments require 7-14 days and additional documentation for export compliance.
- Can I return it if it doesn't fit my needs?
- All firearm sales are final once transferred through an FFL—no returns or exchanges permitted due to federal regulations. We recommend handling similar models at local ranges or consulting our [blog on long-range platform selection](/blog/choosing-between-bolt-and-semi-auto-rifles/) before purchase.
- Does this work with a SilencerCo Omega 300 suppressor?
- Yes—the 5/8x24 threaded muzzle accepts direct-thread mounts for .30 caliber suppressors like the Omega 300. Expect a 2-3 dB reduction at the shooter's ear and minimal point of impact shift when using 140-grain match ammunition.