LWRC SIX8-A5 6.8 SPC II 16.1″ 30rd
About this product
The LWRC SIX8-A5 is a purpose-built semi-automatic rifle chambered in 6.8 SPC II, designed specifically to handle the cartridge's unique feeding requirements and ballistics. This 16.1-inch barreled platform represents LWRC's engineering response to the limitations of retrofitted 5.56 platforms attempting to run the wider 6.8 cartridge. Built from the ground up with proprietary receivers, the SIX8-A5 delivers what modified AR-15s often struggle with: reliable feeding and optimized performance.
What is the LWRC SIX8-A5 used for?
This rifle is purpose-built for hunters and tactical shooters needing intermediate cartridge performance beyond 5.56 NATO. The 6.8 SPC II cartridge delivers approximately 40% more energy at 300 yards compared to 5.56, making it effective for medium game and situations requiring better terminal ballistics. With its 16.1-inch cold hammer-forged barrel and 1:10 twist rate, it stabilizes heavier 6.8 projectiles that wouldn't perform well in standard AR-15 platforms.
How does the LWRC SIX8-A5 compare to the Stevens 334 Rifle?
The SIX8-A5 provides semi-automatic capability where the Stevens 334 Rifle offers bolt-action reliability. LWRC's piston-driven system handles higher-pressure 6.8 SPC II loads more reliably than direct impingement conversions, while the Stevens platform excels in precision shooting scenarios where shot-to-shot consistency matters more than rapid follow-up. For tactical applications or hunting situations requiring quick second shots, the SIX8-A5's semi-auto operation provides a distinct advantage.
What does it weigh and what are the dimensions?
The rifle weighs 7.3 pounds empty and measures 35.5 inches overall with the stock collapsed. The 12-inch modular rail provides ample real estate for accessories while maintaining a balanced front-to-rear weight distribution. At 16.1 inches, the barrel length avoids NFA regulation while providing optimal velocity for the 6.8 SPC II cartridge.
Who is this NOT for?
Budget-conscious shooters should consider more economical options like the Stevens 334 in .243 Win. The SIX8-A5's $2,788 price point reflects premium materials and engineering, making it unsuitable for those wanting occasional plinking or first-time rifle ownership. Additionally, traditionalists preferring wood stocks and blued steel won't appreciate the modern tactical aesthetic and polymer components.
What's in the box?
You receive the complete rifle with one 30-round Magpul PMAG, LWRC's skirmish backup sights pre-installed, and the adjustable compact stock. The package includes the proprietary ambidextrous charging handle and all necessary documentation, but excludes optics, slings, or additional magazines beyond the single included PMAG. Total unpacked weight with packaging is approximately 9.2 pounds.
Is the LWRC SIX8-A5 worth it at $2,788?
At this price, the SIX8-A5 justifies its cost through engineering that avoids the reliability issues plaguing converted 5.56 platforms. The proprietary receivers, full ambidextrous controls, and piston operating system represent approximately $800-900 in premium features over basic AR-platform rifles. For serious hunters or tactical operators needing 6.8 SPC II performance without compatibility headaches, the investment prevents future gunsmithing expenses and reliability concerns.
Specs at a glance
Video review
Pros & cons
What works
- Proprietary receivers eliminate 6.8 SPC feeding issues common in modified AR-15s
- Full ambidextrous controls including bolt release and safety - 100% left-hand friendly
- Piston operation runs cleaner than direct impingement with 40% less gas fouling
- Cold hammer-forged barrel lasts approximately 15,000 rounds before accuracy degradation
Trade-offs
- Proprietary magazines cost $28 each versus $12 for standard PMAGs
- 7.3-pound weight is 1.2 pounds heavier than comparable 5.56 rifles
- Limited aftermarket support compared to standard AR-15 platform components
- Rail height requires specific optic mounts for absolute co-witness with iron sights
Expert review
Key attributes
| upc | 859890005264 |
| manufacturer | LWRC |
| manufacturer part number | SIX8A5RB16 |
| action | Semi-Auto |
| atf type | RIFLE |
| barrel length | 16" |
| caliber/gauge | 6.8mm SPC |
| capacity | 30 + 1 |
| color | Black |
| length | 43.5 |
| number of magazines | 1 30 rd. |
| package height | 4.5 |
| package width | 11.5 |
| product type | Rifle |
| safety | Selector Switch |
| shipping weight | 10.0 |
| sights | LWRC Skirmish Back-Up Sights |
| sights type | Adjustable Sights |
| state restriction (ca) | NO DIRECT SHIP TO CALIFORNIA |
| state restriction (il) | NO SALE TO ILLINOIS PICA |
| state restriction (or) | NO SALE TO OREGON |
| state restriction (ri) | NO DIRECT SHIP TO RHODE ISLAND |
| state restriction (wa) | NO DIRECT SHIP TO WASHINGTON |
Frequently asked questions
- Is it compatible with standard AR-15 magazines?
- No, the SIX8-A5 requires proprietary LWRC SIX8 PMAGs due to the wider 6.8 SPC II cartridge dimensions. Standard AR-15 magazines measure 0.936 inches wide while the SIX8 PMAG measures 1.085 inches to accommodate the larger cartridge body. Magpul produces these specifically for LWRC's 6.8 platform.
- Does it work with standard 5.56 NATO suppressors?
- Yes, the 5/8x24 muzzle threads accept most .30 caliber suppressors rated for 6.8 SPC pressures. However, verify your suppressor's pressure rating exceeds 55,000 PSI since 6.8 SPC II operates at higher pressures than 5.56 NATO. SilencerCo Omega 300 and Dead Air Sandman models handle this platform effectively.
- How long does shipping take to FFL dealers?
- Ironclad Armory processes shipments within 3 business days, with transit times averaging 5-7 days depending on your FFL's location. All firearms ship via FedEx with signature requirement and tracking provided immediately upon shipment. Contact your local FFL beforehand to ensure they accept transfers from online retailers.
- Can I return it if there are mechanical issues?
- Ironclad Armory accepts returns within 30 days for manufacturer defects, with LWRC providing a lifetime warranty on materials and workmanship. Return shipping for warranty work is typically covered by LWRC, with turnaround times averaging 2-3 weeks including shipping and repair. Non-mechanical returns are subject to a 15% restocking fee.