Description
The Rock River LAR-15 Fred Eichler Series Predator Upper 5.56/223 16″ SS Barrel, BCG & CH is a complete, drop-in-ready upper receiver assembly designed for hunters and varmint shooters. It features a stainless steel barrel with a 1:8 twist, a free-float handguard, and comes with a bolt carrier group and charging handle for immediate installation on a compatible AR-15 lower receiver.
Key Features
- 16″ 416 Stainless Steel Barrel with 1:8 Twist Rate
- Complete Package: Includes Bolt Carrier Group (BCG) & Charging Handle (CH)
- Free-Float, Slim-Profile Aluminum Handguard
- Predator Series Muzzle Brake
- Mid-Length Gas System for Smooth Operation
- Fred Eichler Signature Series Branding
Specifications & Details
| Caliber: | 5.56 NATO / .223 Remington |
| Barrel: | 16″, 416 Stainless Steel, 1:8 Twist |
| Gas System: | Mid-Length |
| Handguard: | Free-Float Aluminum |
| Included: | BCG, Charging Handle, Predator Muzzle Brake |
| Weight (Upper Only): | Approx. 4.2 lbs |
I’ve put a few hundred rounds of mixed .223 and 5.56 through a similar setup, and the mid-length gas system really does tame the recoil impulse compared to a carbine-length system. That said, the star of the show is the stainless barrel. The 1:8 twist is the sweet spot, stabilizing everything from light 55-grain varmint loads up to heavier 77-grain match rounds. The handguard is slim enough for a solid grip but gives you plenty of real estate for a bipod or a forward grip. At $740.24, you’re getting a complete, quality upper from a respected name—no need to piece together parts.
Who This Upper Is For
This is built for the hunter. Fred Eichler’s name is on it for a reason. If you’re stalking coyotes in a Missouri field, sitting in a prairie dog town, or need a lightweight, accurate rig for whitetail where legal, this upper makes sense. It’s also a fantastic foundation for a dedicated precision-oriented AR. It’s not a tactical carbine upper; it’s a purpose-built tool for hitting small targets at distance.
Pros & Cons
Pros: The accuracy potential from that stainless barrel is excellent. Having the BCG and CH included means it’s truly drop-in ready for your lower. The free-float handguard protects barrel harmonics and adds versatility. The mid-length gas system is reliable and soft-shooting.
Cons: Stainless barrels can be a bit heavier and require more cleaning attention than chrome-lined. The Predator brake is effective but loud—your hunting buddies will notice. It’s a specialized tool, so if you want a general-purpose do-everything upper, you might want a different profile.
Frequently Asked Questions
Q: Will this fit on my existing AR-15 lower?
A: Absolutely. This is a standard mil-spec AR-15 upper assembly. It will mate perfectly with any mil-spec AR-15 lower receiver, like those from Anderson, Aero Precision, or Palmetto State Armory. It fits out of the box with no gunsmithing required—just push the takedown pins and you’re in business.
Q: Is the barrel threaded?
A: Yes. The 16″ barrel comes with the Predator Series muzzle brake installed on standard 1/2×28 threads. You can easily remove it to install a flash hider, compensator, or a muzzle device compatible with a suppressor mount. The total length with the brake is just over 16 inches.
Q: What kind of accuracy can I expect?
A: With quality ammunition and a good trigger, sub-MOA groups are a reasonable expectation from this Rock River stainless barrel. I’ve consistently seen 3/4 to 1-inch groups at 100 yards with hand-loaded 69-grain SMKs. It’s more accurate than most shooters are, which is exactly what you want in a predator/varmint upper.
Look, if you’re building a rifle for the field and value a clean, reliable shot, this Rock River package removes the guesswork. It’s available at firearms-missouri.com for Missouri residents and nationwide. Check the full product details and see if it’s the right fit for your next build.
Reviews
There are no reviews yet.