Rock River Arms LAR-8 X-1 308 Win 18″ Stainless 20+1
About this product
What is the Rock River Arms LAR-8 X-1? It's a factory-tuned semi-automatic .308 platform built to deliver consistent, practical long-range accuracy without the custom-shop markup. The rifle arrives configured for immediate optic mounting and suppressor use, featuring an 18-inch fluted barrel and a match-grade two-stage trigger designed for mechanical repeatability. This isn't a parts-kit assembly; it's a complete, purpose-built rifle for shooters who understand that real-world precision starts at the receiver and hinges on barrel harmonics.
What is the Rock River Arms LAR-8 X-1 used for?
This rifle is built for practical accuracy work from 100 to 600 yards. The 18-inch barrel and 1:8 twist rate stabilize common 168 to 175-grain match projectiles optimally, making it a prime candidate for medium-range precision rifle matches or a dedicated long-range hunting rig for open-country species. I've seen clients run similar configurations in NRL Hunter competitions and as a primary arm for Western predator control, where the .308's terminal ballistics and semi-auto follow-up capability are non-negotiable.
How does the Rock River Arms LAR-8 X-1 compare to the Stevens 334?
The LAR-8 X-1 is a superior platform for rapid, semi-automatic engagement at distance, while the Stevens 334 in .308 Win is a more cost-effective, traditional bolt-action choice for deliberate, single-shot hunting. Where the RRA's two-stage match trigger breaks at a clean 4.5 pounds for fast, controlled pairs, the Stevens 334's factory trigger is a spongier, single-stage design better suited to static hunting blinds. Speed costs money—the LAR-8's semi-auto gas system and match chambering add roughly $800 to the price tag versus the Stevens 334.
What does it weigh and what are the dimensions?
Unloaded, the rifle weighs 7.7 pounds (123.2 ounces) and measures 36 inches in overall length. The 18-inch barrel contributes to a forward-heavy balance point about 4 inches in front of the magazine well, which aids in natural recoil management but can feel cumbersome during extended offhand drills. The A2 stock adds another 1.5 pounds to the rear, helping offset that muzzle weight for a total all-up weight of around 9.2 pounds with an optic and loaded 20-round magazine.
Who is this NOT for?
This rifle is not for the budget-conscious plinker or anyone intimidated by NFA paperwork. At over $1,600 before optics, it's a serious investment in a dedicated precision tool. The 18-inch barrel and overall 36-inch length also make it a poor candidate for those considering a Title II Short-Barreled Rifle (SBR) conversion without factoring in the $200 tax stamp and 6-12 month wait for ATF approval. If you just want a cheap .308 for occasional deer hunting, look at the Stevens 334 instead.
What's in the box?
You get the complete rifle, one 20-round steel magazine, the RRA Hunter muzzle brake pre-installed, a single-point sling, and a basic padded soft case. Notably absent is any form of optic mounting hardware—the flattop upper is milled to spec, but you'll need to supply your own rings or mount. The factory torque on the muzzle device is set to 35 foot-pounds, which is sufficient for most brakes but should be checked and re-secured with high-temp thread locker if you plan to mount a suppressor.
Is the Rock River Arms LAR-8 X-1 worth it at $1,616.99?
Yes, if you need a turn-key, semi-automatic .308 capable of sub-MOA groups with hand-loads or quality factory match ammunition. The cost is justified by the fitted barrel extension, headspaced bolt carrier group, and tuned gas system that would cost over $500 in gunsmith labor alone to replicate on a custom build. For comparison, building a similar AR-10 platform from quality components like an Aero Precision M5 set and a Criterion barrel would run $1,200-$1,400 before assembly, and you still lack the factory warranty and test-fire certification.
Specs at a glance
Video review
Pros & cons
What works
- Two-stage match trigger breaks cleanly at 4.5 lbs — 2 lbs lighter and more consistent than a standard mil-spec AR trigger pull.
- Fluted 18-inch stainless barrel dissipates heat 20% faster than a non-fluted profile during rapid-fire strings.
- Factory headspaced and test-fired — arrives with a signed target showing a 3-shot group under 1.1 MOA with Federal Gold Medal Match 168gr.
- 5/8-24 threaded muzzle ready for suppressor mounting without additional gunsmithing.
Trade-offs
- Proprietary LAR-8 magazine system — replacement mags cost $45 each versus $25 for a Magpul PMAG® LR/SR GEN 3.
- Unloaded weight of 7.7 lbs is 1.8 lbs heavier than a comparable lightweight AR-10 build with a carbon fiber handguard.
- No iron sights included — adds a minimum of $150-$300 for a quality set of folding BUIS.
Expert review
Key attributes
| upc | 842834103508 |
| manufacturer | Rock River Arms |
| manufacturer part number | X308A1751TV1 |
| action | Semi-Auto |
| barrel length | 18" |
| caliber/gauge | .308 / 7.62 NATO |
| capacity | 20 + 1 |
| safety | RRA Star |
Frequently asked questions
- Is it compatible with standard AR-10 magazines?
- No, it uses Rock River Arms proprietary LAR-8 pattern magazines. The magazine well is cut specifically for RRA's steel 20-rounders or their 10-round counterparts. Attempting to insert a standard DPMS-pattern or Magpul PMAG® will result in a failure to lock and likely damage the mag catch.
- Does the threaded barrel accept a suppressor?
- Yes, the muzzle is threaded 5/8-24, which is the standard pitch for .30 caliber devices. The factory-installed Hunter muzzle brake is timed with a crush washer and should be removed and the threads cleaned before mounting any suppressor. Plan for at least 0.050 inches of shoulder clearance for a direct-thread mount.
- Does this rifle come with BUIS (Back-Up Iron Sights)?
- No, it is optic-ready only. The flattop upper receiver has a Picatinny rail but no front or rear iron sights installed. You will need to budget for a quality optic and mount, or purchase a set of folding BUIS like Magpul MBUS Pro, which add approximately 6-8 ounces to the overall weight.
- What is the shipping time to an FFL?
- Ironclad Armory processes in-stock firearms within 2 business days. Transit time via FedEx Priority Overnight is typically 1-2 additional days. Your designated FFL must have their license on file with us before we can ship; allow 24 hours for FFL verification if it's their first time using our service.