Description
The Rock River Arms LAR-8 Complete Lower, 2-Stage Trigger, Tactical CAR Stock, Black is a ready-to-assemble lower receiver designed for the .308 Winchester/7.62x51mm NATO platform. It’s a drop-in-ready foundation that pairs with a compatible LAR-8 or similar AR-10 pattern upper receiver to build a high-performance, large-frame rifle. This complete lower ships with a premium two-stage trigger and a six-position tactical stock installed, requiring no gunsmithing to get you from the box to the range.
When it comes to building a dependable .308 rifle for hunting, long-range target work, or a serious-duty role, the foundation is everything. That’s where this Rock River Arms LAR-8 Complete Lower comes in. It provides the critical control components of your rifle in a single, quality-assembled package. At $422.99, it represents a significant head start on a custom build, eliminating the guesswork and tooling needed to install a trigger, stock, and buffer system yourself.
- Complete & Assembled: Includes lower receiver, trigger group, stock, pistol grip, and buffer system—ready for your upper.
- Premium Two-Stage Trigger: Features Rock River Arms’ renowned National Match two-stage trigger for a crisp, predictable break.
- Tactical CAR Stock: Six-position adjustable stock provides a solid cheek weld and length-of-pull customization for any scenario.
- Mil-Spec Compatibility: Built to standard AR-10/LR-308 dimensions for broad compatibility with aftermarket parts and uppers.
Specifications & Details
| Specification | Detail |
|---|---|
| Caliber Platform | .308 Winchester / 7.62x51mm NATO (LAR-8 / AR-10 Pattern) |
| Trigger | Rock River Arms National Match Two-Stage |
| Stock | 6-Position Tactical CAR Stock, Black |
| Pistol Grip | Standard A2 Grip |
| Receiver Material | 7075-T6 Aluminum Forging |
| Finish | Type III Hard Coat Anodized Black |
This lower is engineered to mate seamlessly with Rock River Arms LAR-8 upper receivers, and its mil-spec design ensures it will also pair correctly with many other DPMS-pattern .308 uppers. The installed two-stage trigger is a standout—offering a light take-up followed by a clean, consistent break that enhances accuracy whether you’re sending rounds downrange at a paper target or making an ethical shot on game. The buffer tube, spring, and weight are correctly configured for the .308 platform’s heavier bolt carrier, so you get reliable cycling from the start. Here’s the thing—building a large-frame AR can be a puzzle of part compatibility, but this complete lower solves the hardest piece.
Who This Lower Is For
This product is for the shooter who wants a no-fuss, high-quality starting point for a custom .308 rifle. It’s ideal for the hunter building a lightweight, accurate woods rifle, the precision shooter assembling a capable long-range platform without a gunsmith’s bill, or the Missouri resident seeking a robust home defense option with serious stopping power. It’s also perfect for those who appreciate the superior control of a two-stage trigger but don’t want the hassle of installing one themselves.
Pros & Cons
Pros: The major advantage is that it’s a complete, functional assembly from a trusted manufacturer. The included two-stage trigger is a significant value-add over a standard mil-spec unit. The tactical stock offers immediate adjustability for different users or layers of clothing. Its mil-spec design means broad upper receiver compatibility and easy parts replacement if desired.
Cons: As a complete unit, you’re committed to the included trigger and stock style—though both are excellent. The total weight of the assembled lower is approximately 3.5 lbs, contributing to a final rifle weight you must consider for your intended use. You will still need to source a compatible upper receiver, bolt carrier group, and charging handle to have a functioning firearm.
Frequently Asked Questions
Q: What upper receivers will this lower work with?
A: It is designed specifically for Rock River Arms LAR-8 uppers and is compatible with most DPMS-pattern .308/7.62 NATO uppers. Always verify compatibility with your specific upper receiver before purchase, as the AR-10 platform has variations.
Q: Is the two-stage trigger adjustable?
A: The Rock River Arms National Match two-stage trigger is not user-adjustable. It is preset at the factory to provide a consistent, reliable pull weight—typically around 4.5 pounds—which is ideal for both precision and general use.
Q: What is required to take possession?
A: This complete lower is classified as a firearm. It must be shipped to a licensed FFL dealer, where you will complete a background check (Form 4473) before taking possession. This product is available at firearms-missouri.com for Missouri residents and nationwide to compliant states.
Ready to build your .308 platform on a foundation of proven reliability? Add the Rock River Arms LAR-8 Complete Lower to your cart to start your project.
Reviews
There are no reviews yet.