Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Enjoy free shipping during the holidays! Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.

Enjoy Our Extended FREE RETURNS

We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later). We'll even cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
Questions & Answers
What profile this barrel is? Expert Answer

The Rock River Arms National Match A4 Competition .223 Wylde Completed Upper features an air gauged heavy match stainless steel (1:8 twist) barrel.

by Ethan, Gear Expert, June 14, 2023
Customer Reviews
Helpful Positive Review
Don't underestimate Rock River by Jp, Verified Owner, September 11, 2024
I bought this to replace my previous RRNM upper that had 3k rounds through it. I haven't noticed an accuracy decrease yet, but decided it was time. Used previous upper through 5 summers of highpower, won 3 State Chamionships, NRA regional, went dis...
Read More...
1/1 found this helpful
Most Recent Reviews
I liked it so much that ended up getting 2 more RRA uppers.
Most Recent Reviews
RRA NM A4 AR-15 Rifle Upper by Airgunner, Verified Owner, April 27, 2025
I really like the upper because it’s really accurate. Hornady Frontier 68 grain HPBT is a good load for it. I was getting .3’s @ 50 yards.
Read All 3 Reviews
Show In Stock Only
2 Models Available
Overall Length
All
Barrel Length
All
Gas System Length
All
Handguard Length
All
Weight
All
Search
Click to select this item for your bundle offer!

Buy Together and Save

As low as $648.98
You Save Up to $66.01
Receive $14.00 OP Bucks

ATTENTION! We currently do not ship this product to AK, CA, HI, IL, NY, WA, P.O. Boxes, and U.S. Territories. Please see our policies for more information.

Product Info for Rock River Arms National Match A4 Competition .223 Wylde Completed Upper

If you're searching for an amazing price on the Rock River Arms National Match A4 Competition .223 Wylde Completed Upper, then you've come to the ideal spot..image

These AR15 Upper Receivers through the professional product specialists at Rock River Arms are made using dependable and reliable components, in order to provide you with a product that is going to be effective for a long time. Manufactured utilizing some of the best attainable components and design, these AR15 Upper Receivers through the product experts at Rock River Arms can last an exceptionally long time.

Rock River Arms has been generating high-quality products for a number of years, and the Rock River Arms National Match A4 Competition .223 Wylde Completed Upper is their way of demonstrating how much they care.

At OpticsPlanet, we make it our responsibility to get the perfect product for your preferences, and featuring the Rock River Arms National Match A4 Competition .223 Wylde Completed Upper is one thing that we're delighted to offer.

WARNING: California`s Proposition 65

Specifications for Rock River Arms National Match A4 Competition .223 Wylde Completed Upper:

Manufacturer: Rock River Arms
Caliber: 5.56x45mm NATO, .223 Wylde
Barrel Profile: Competition
Barrel Twist Rate: 1-8
Threads per Inch: 1/2x28
Handguard Type: Free-Float
Muzzle Device: A2 Flash Hider
Finish: Anodized
Color: Black
Gas Block Journal Size-Diameter: .750 in
Handguard Style: Quad Rail
Gun Rail: Full Top Rail
Included Accessories: None
Barrel Material: 416R Stainless Steel
Bolt Carrier Group Included: COM-SPEC
Charging Handle Included: COM-SPEC
Magazine Included: No

Package Contents:

  • Rock River Arms National Match A4 Competition .223 Wylde Completed Upper
  • Bolt Carrier Group
  • Charging Handle Assembly

Rock River Arms National Match A4 Competition .223 Wylde Completed Upper Orderable Models

List of Orderable Models

  • Rock River Arms Completed Upper Receiver, National Match A4 .223/5.56mm, 20 Inch Barrel, Competition Profile, 1-8 Twist, 1/2-28 Thread, Free-Float Handguard, A2 Flash Hider, Black, AR0784 , MPN: AR0784 , UPC: 842834100125 , Code: 1WN-UFH-NMA4-AR0784
  • Rock River Arms Completed Upper Receiver, National Match A4 .223/5.56mm, 16 Inch Barrel, Competition Profile, 1-8 Twist, 1/2-28 Thread, Free-Float Handguard, A2 Flash Hider, Black, AR0785 , MPN: AR0785 , UPC: 842834100132 , Code: 1WN-UFH-NMA4-AR0785
Compare (0)