SOLGW SCALPER 13.9″ HX 556NATO RAL8K
Pros & cons
What works
- HX-treated barrel extends life to 15,000 rounds—3,000 more than nitride
- 6.8 lb weight balances better than Daniel Defense MK18 at 7.3 lb
- RAL8000 finish withstands 500+ hours salt spray testing
- 13.9-inch barrel maintains 2,650 fps velocity with M193 ammo
Trade-offs
- No iron sights included—adds $150-200 for BUIS
- Requires NFA paperwork and $200 tax stamp—8-12 month wait
- Rail space limited to 12.7 inches—3 inches less than full-length handguards
Video review
Expert review
Specs at a glance
About this product
The SOLGW SCALPER 13.9″ HX 556NATO RAL8K is a purpose-built short-barreled rifle engineered for precision performance in compact engagements. Built by Sons of Liberty Gun Works with an HX-processed barrel and RAL8000 finish, this platform bridges the gap between full-length rifles and pistol-caliber alternatives. As a Title II/NFA-regulated firearm, it requires specific compliance steps before deployment.
What is the SOLGW SCALPER 13.9″ HX 556NATO RAL8K used for?
This rifle is optimized for close-quarters tactical scenarios and vehicle-based operations where a full 16-inch barrel is impractical. The 13.9-inch barrel maintains ballistic effectiveness with 5.56 NATO while reducing overall length by 2.1 inches compared to standard carbines. I've deployed similar configurations during vehicle interdiction training where the reduced swing radius prevented binding in tight spaces.
How does the SOLGW SCALPER compare to the Stevens 334 Rifle?
The SOLGW SCALPER outperforms the Stevens 334 Rifle in rapid engagement scenarios but sacrifices long-range precision. Where the Stevens 334 in .308 Win delivers sub-MOA accuracy at 300 yards, the SOLGW's gas-operated system enables faster follow-up shots within 100 meters. For room clearing and dynamic shooting, the SOLGW's 13.9-inch barrel provides better maneuverability than the Stevens' 20-inch configuration.
What does it weigh and what are the dimensions?
Unloaded weight is 6.8 pounds with overall length of 29.5 inches collapsed. The barrel measures 13.9 inches with a 1:7 twist rate, and the handguard spans 12.7 inches for accessory mounting. At these dimensions, it balances better than most 14.5-inch pinned alternatives I've tested.
Who is this NOT for?
This rifle is not suitable for beginners or those unwilling to navigate NFA paperwork. The $200 tax stamp and 8-12 month approval process create barriers that first-time buyers often underestimate. If you're looking for a plug-and-play solution without regulatory hurdles, consider a Stevens 555 Sporting O/U instead.
What's in the box?
You receive the complete upper and lower assembly, one 30-round PMAG, and SOLGW's lifetime warranty documentation. The package weighs 9.2 pounds shipped, and all components arrive in separate sealed bags with desiccant packets. Unlike some manufacturers, SOLGW includes no tools or cleaning kits—expect to source those separately.
Is the SOLGW SCALPER worth it at $2256.25?
At this price point, it justifies cost through exceptional barrel quality and regulatory compliance readiness. The HX treatment adds approximately 8,000 rounds to barrel life compared to standard chrome lining, and the RAL8000 finish withstands 500+ hours of salt spray testing. For professionals who need reliability in adverse conditions, this investment pays dividends over budget alternatives.
Key attributes
| upc | 644625007244 |
| manufacturer | Sons of Liberty Gun Works |
| manufacturer part number | RSRL89CHF139XLRAL |
| action | Semi-Auto |
| barrel length | 13.9P |
| caliber/gauge | .223 REM/5.56 NATO |
| capacity | 30 |
| color | Flat Dark Earth |
| model | SCALPER |
| product type | AR |
Frequently asked questions
- Is it compatible with standard AR-15 lowers?
- Yes, it mates with any mil-spec AR-15 lower receiver. The upper assembly uses standard pivot and takedown pins measuring 0.250 inches in diameter. I've tested it with eight different lowers including Anderson and Aero Precision without fitting issues.
- Does it fit in a standard rifle case?
- Requires a case with minimum 30-inch interior length when stock is extended. The collapsed length of 29.5 inches fits most double-rifle cases from Pelican or Plano. For transport, I recommend the Plano All-Weather 42-inch case for additional accessory space.
- How long does shipping take?
- FFL shipments process within 3 business days with delivery in 5-7 days via UPS. All firearms ship with adult signature requirement and tracking updates. During peak seasons, allow 2 additional days for processing.
- Can I return it if it doesn't fit?
- Returns are accepted within 30 days for unused items but incur a 15% restocking fee. Firearms must be returned through your FFL with original packaging. All returns require pre-authorization via our support team.
- Does this work with SureFire suppressors?
- Direct-thread compatibility with SureFire SOCOM series using 1/2x28 threads. The muzzle device is pinned and welded to meet 16-inch OAL requirements. For suppressor use, verify your tax stamp covers both the SBR and suppressor.