.223/5.56 Complete Uppers

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Looking to save time on your next build? Missing some key tools needed to assemble an upper? Check out Wing Tactical’s collection of high-quality, complete 5.56 and .223 upper receivers.

A custom AR with the upper receiver detached from the lower receiver laying on a bench next to an ammo can.

Complete .223 and 5.56 Upper Receivers

AR-15s are easily the most popular rifles in the United States, and one of the reasons for their popularity is their modular design. Building AR pattern rifles can be quite an intuitive process. If you have an AR lower, you can mix and match other parts and build an AR pattern rifle according to your preferences.

Complete AR uppers make this process a lot easier. These complete 5.56 and .223 AR uppers include all the parts required for a functional AR upper. They are designed for various calibers and to fit a wide range of mission requirements.

Spike’s Tactical ST-15 LE 16” 5.56 uppers in four variations

Complete Uppers

Wing Tactical offers complete upper receivers in a wide variety of calibers, barrel lengths, and rail systems. Our inventory of .223 and 5.56 uppers are perfect for builders looking to create customized AR-15 builds for any application.

 Wing Tactical premium AR-15 complete upper bundle featuring an Aero Precision 5.56 upper, AB Arms bolt carrier group, and Radian ambidextrous charging handle

Complete Upper Bundles

If you’re looking for a more comprehensive product, Wing Tactical offers multiple complete upper bundles — packages featuring a complete upper receiver, bolt carrier, charging handle, or other components. Save time on product sourcing and start building.

Wing Tactical: Your Home for Custom AR-15 Build Components

Whether you’re building your first AR-15 or you’re a seasoned AR rifle customizer, you can trust Wing Tactical for all of your components sourcing needs. Why waste time sifting through subpar aftermarket parts when you can turn to a quality-first components collection and get your build right the first time?

Our 100% satisfaction guarantee backs all of our products. If your product doesn’t perform as expected, we’ll make it right. If you have any questions about any of the products in our collection, feel free to reach out to our dedicated customer service team. We’re always here to help!

Frequently Asked Questions

Which AR-15 parts are included in 5.56/.223 complete uppers?

5.56/.223 complete uppers include a barrel chambered in either .223 or 5.56 NATO. Each complete upper package (at minimum) includes a barrel, gas system, a handguard, and an upper receiver. Some packages include a complete bolt carrier group and charging handle as well.

Why use a complete upper assembly instead of individual parts?

These complete upper assemblies take the guesswork out of finding compatible parts for your AR uppers. They offer a complete, assembled upper, with parts that complement each other, and help you build a rifle that is fine-tuned to fit its purpose.

From long and heavy 5.56/.223 uppers that are made for precision shooting to super short AR pistol uppers that are perfect for CQB, you can find complete AR uppers in almost every configuration you can imagine.

Can I get a complete upper with a .223 Wylde barrel?

If you’re looking to build a hybrid firearm capable of safely firing both .223 and 5.56, you’re in luck — Wing Tactical offers complete uppers with .223 Wylde barrels for peak ammo compatibility.

Will any upper fit any lower?

In theory, upper and lower receivers from different manufacturers will fit together as long as they’re chambered in the same round. But, before making a purchase, read product descriptions carefully to ensure compatibility between a complete upper and your lower receiver.

Can anyone buy an AR-15 upper?

Yes — unlike lower receivers, anyone can purchase an AR upper online. Since upper receivers don’t include any cartridge discharge components (like a trigger or a hammer), you don’t need to source them through an FFL.