Description
The Rock River Arms LAR-47 X-Series SA 7.62×39 18″ Barrel, Carbine Stock Black, 30rd is a purpose-built AR-platform rifle chambered in the potent 7.62x39mm cartridge. It’s engineered to reliably run the affordable, hard-hitting Soviet round using a dedicated lower receiver that accepts standard AK-47 magazines. This hybrid design merges the familiar ergonomics and customization of an AR-15 with the ballistic profile and magazine compatibility of an AK platform.
Key Features
- Chambered in 7.62x39mm for cost-effective, powerful shooting.
- Dedicated LAR-47 lower receiver accepts unmodified AK-pattern magazines (30-round included).
- 18-inch chrome-moly barrel with a 1:10 twist rate, optimized for the cartridge.
- Two-stage national match trigger for a crisp, predictable pull.
- Carbine-length gas system with a standard A2 flash hider.
- Classic six-position carbine stock and A2 pistol grip for familiar handling.
Specifications & Details
| Caliber | 7.62x39mm |
|---|---|
| Barrel Length | 18″ Chrome-Moly |
| Twist Rate | 1:10 |
| Overall Length | 37.5″ – 40.75″ (Stock Extended/Collapsed) |
| Weight (Unloaded) | Approx. 7.8 lbs |
| Magazine | Includes (1) 30-round AK-pattern magazine |
I’ve put a few hundred rounds of mixed steel and brass-case 7.62×39 through a similar setup, and the appeal is immediate. You get the AR’s excellent trigger and sighting options paired with the thump of the x39 round—all without fiddling with finicky AR mag adapters. The 18-inch barrel is a sweet spot, giving you a bit more velocity over a typical 16-inch carbine without turning it into a cumbersome rifle. At $1257.05, it sits in a competitive space for a factory-built, niche rifle from a respected maker like Rock River Arms. The build quality is solid, and it’s essentially drop-in ready for your range bag after the mandatory FFL transfer.
Who This Rifle Is For
This is for the shooter who appreciates the 7.62x39mm cartridge but prefers the AR-15’s ergonomics and aftermarket. It’s ideal for someone with a stash of AK magazines wanting a more modular platform, or an AR enthusiast looking to branch into a more powerful, economical caliber without learning a completely new manual of arms. It also makes a fantastic dedicated hunting rig for medium game in states where straight-wall cartridges aren’t required.
Pros & Cons
Pros: Reliable feeding from proven AK magazines. Excellent two-stage trigger out of the box. The 18-inch barrel maximizes the cartridge’s potential. Rock River’s reputation for quality and fit. Huge AR-15 aftermarket for everything but the lower receiver and bolt carrier group.
Cons: Heavier than a standard 5.56 AR. Proprietary lower and BCG mean parts aren’t as ubiquitous as mil-spec AR parts. The carbine stock is functional but basic—many will want to upgrade it. Here’s the thing—if you’re deep into the AK ecosystem and love its manual of arms, this might feel like a solution to a problem you don’t have.
Frequently Asked Questions
Q: What AK magazines does it use?
A: It uses standard, unmodified AK-47 pattern magazines from companies like Magpul (PMAG), US Palm, and surplus steel mags. Reliability is typically excellent with quality magazines.
Q: Is the upper compatible with a standard AR-15 lower?
A: No, it is not. The 7.62x39mm cartridge requires a dedicated bolt face and barrel, and the LAR-47 uses a proprietary lower receiver designed to accept AK magazines. The upper and lower are a matched set for this system.
Q: Can I use my existing AR-15 triggers and grips on this lower?
A: Yes. The fire control group and pistol grip are standard AR-15 compatible, so your favorite Geissele or LaRue trigger and any AR pistol grip will fit perfectly.
This rifle fills a specific niche brilliantly, offering a refined, accurate, and reliable way to shoot 7.62×39. If that combination speaks to you, it’s a compelling option available at firearms-missouri.com for Missouri residents and nationwide. Check its current availability on our site.
Reviews
There are no reviews yet.