Description
The Rock River Arms Varmint AR-15 5.56/223 20″ Heavy Barrel, RRA Operator Buttstock, 20 Rd Mag, Rockote Grey Distressed Finish is a purpose-built, precision-oriented rifle. It combines a heavy-contour 20-inch barrel for superior accuracy with a rugged, low-glare finish and a stable Operator buttstock, creating a dedicated platform for varmint control and medium-range target work. This rifle is designed for the shooter who demands consistent, repeatable performance when every shot counts.
Key Features
- 20″ Heavy Barrel: A cold hammer-forged, chrome-lined barrel with a 1:9 twist rate provides the rigidity and harmonics needed for tight groups with 5.56/.223 ammunition.
- Rockote Grey Distressed Finish: More than just looks, this textured, low-reflectivity coating offers exceptional durability and corrosion resistance while breaking up the rifle’s outline in the field.
- RRA Operator Buttstock: This fixed-position stock delivers a solid, consistent cheek weld and length of pull, eliminating the wobble sometimes found in adjustable stocks for a steadier hold.
- Two-Stage National Match Trigger: A crisp, predictable trigger pull enhances control and shot placement, a critical upgrade for precision shooting.
- Varmint Handguard: The free-float design prevents external pressure from affecting barrel harmonics, ensuring your point of impact stays true.
Specifications & Details
| Caliber | 5.56 NATO / .223 Remington |
| Barrel | 20″ Heavy Contour, Chrome-Lined, 1:9 Twist |
| Overall Length | Approx. 39.5″ |
| Weight (Unloaded) | Approx. 8.9 lbs |
| Stock | RRA Operator Fixed Buttstock |
| Finish | Rockote Grey Distressed |
| Magazine | 20-Round Aluminum Included |
Weighing in at approximately 8.9 pounds unloaded, this rifle’s heft is a feature, not a flaw—it soaks up recoil and steadies your aim. The 20-inch barrel length optimizes velocity for the 5.56 cartridge, giving you effective reach on prairie dogs, coyotes, or paper targets out to several hundred yards. It’s built on a mil-spec compatible platform, meaning you can easily customize it with a vast array of aftermarket AR-15 parts from brands like Magpul or BCM. The package is drop-in ready, requiring no gunsmithing to get you from the case to the firing line.
Who This Rifle Is For
This is a specialist’s tool. It’s for the landowner who needs to protect livestock from predators with decisive, ethical shots. It’s for the competitive shooter who wants a reliable, out-of-the-box foundation for Service Rifle or precision carbine matches. It’s also for the enthusiast who appreciates a rifle built with a specific mission in mind, valuing accuracy and durability over lightweight maneuverability. If your primary need is clearing rooms, a shorter barrel is better. But when it comes to reaching out with authority from a supported position, this configuration excels.
Pros & Cons
Pros: The heavy barrel delivers outstanding accuracy and heat management during sustained fire. The fixed stock and two-stage trigger provide a stable, predictable shooting platform. The distressed Rockote finish is incredibly tough and reduces glare. You’re getting premium Rock River Arms quality and attention to detail at a price point of $1879.99.
Cons: The weight and length make it less ideal for dynamic, close-quarters use. The fixed stock cannot be adjusted for different users or gear. The 1:9 twist rate is versatile but may not stabilize the very heaviest .223 bullets over 75 grains as well as a 1:7 or 1:8 twist. That said, for most common varmint and match loads, it’s perfectly matched.
Frequently Asked Questions
Q: Is the barrel threaded for a muzzle device?
A: Yes, the barrel features a standard 1/2″-28 thread pattern, allowing you to attach a flash hider, compensator, or suppressor mount. The rifle ships with an A2-style flash hider installed.
Q: Can I use standard AR-15 magazines with this rifle?
A: Absolutely. It accepts all mil-spec AR-15/M4 pattern magazines, including popular PMAGs from Magpul and USGI aluminum mags, giving you maximum flexibility for capacity and reliability.
Q: What type of optic is best suited for this rifle?
A: This rifle begs for magnification. A variable-power scope in the 3-9x or 4-12x range is an ideal match for its varmint and precision role, allowing for precise shot placement at extended distances. A quality mount is essential.
Ready to add this dedicated precision AR to your collection? This Rock River Arms Varmint model is available at firearms-missouri.com for Missouri residents and nationwide. FFL transfer required for firearm purchases.
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