What is an AR-15 Upper Receiver?

The AR-15 upper receiver is the top half of the rifle that houses critical components like the barrel, bolt carrier group, and gas system. This assembly attaches to the lower receiver to complete your firearm. The AR-15 upper plays a vital role in the rifle’s accuracy, reliability, and overall functionality. Available in a variety of calibers and configurations, it allows for customization to suit specific needs. 

Different Types of AR-15 Uppers

When choosing an AR-15 complete upper or AR-10 upper receiver, strength and quality are paramount. The material and manufacturing method greatly impact the performance of the receiver. AR-15 upper receivers are typically made using one of two methods:

  • Forged
  • Billet

Both methods offer advantages, but the choice will depend on your specific requirements.

What Parts Make Up an AR-15 Upper Assembly?

A complete AR-15 upper assembly includes several key components, such as:

  • Charging handle
  • Forward assist
  • Dust cover
  • Barrel assembly
  • Gas system
  • Muzzle device
  • Handguard
  • And smaller internal parts

Our AR-15 upper assemblies come fully assembled and ready to attach to your lower receiver. You can order these parts with or without a bolt carrier group (BCG) and charging handle, depending on your preference. We offer a wide selection of AR-15 complete upper kits to meet your specific customization needs.

High-Quality AR-15 Uppers for Your Build

Our AR-15 upper receivers are known for their precision and durability. We offer a variety of AR-15 upper assemblies for different calibers, including 5.56 uppers, 223 Wylde, 300 AAC Blackout, 7.62×39, 9mm, and 6.5 Grendel receivers. Each complete upper is checked for headspace and test-fired to ensure top-notch performance.

We keep AR-15 parts in stock and offer the flexibility to build to order. Whether you’re working on an AR-15 upper assembly or an AR-10 upper assembly, we ensure that our parts are built to perform at the highest standards.

How to Assemble an AR-15 Upper Receiver

Building your own AR-15 upper assembly requires several parts, such as:

  • A gas block
  • Barrel
  • Handguard
  • Charging handle
  • Bolt carrier group, and
  • Muzzle brake. 

You’ll also need tools like:

  • A brass/nylon hammer
  • SAE Allen wrenches
  • Roll pin punch set
  • Needle nose pliers, and 
  • A Wheeler torque wrench.

Building an upper can be complex and requires experience. For most builders, the best option is to purchase a fully assembled AR-15 complete upper or AR-10 upper assembly, which eliminates the guesswork and ensures reliability right out of the box.

How to Remove an AR-15 Upper Receiver

To remove the AR-15 upper receiver, follow these steps:

  1. Remove the magazine.
  2. Depress the rear take-down pin.
  3. Push the front pivot pin and remove the upper assembly.
  4. If desired, the charging handle can be pulled back, allowing the BCG to be removed.

Ready to Upgrade Your Rifle?

Whether you’re building a custom AR-15 or looking for a high-performance AR-10 upper assembly, we have the AR-15 complete uppers and AR-10 upper assemblies you need to take your rifle to the next level. Our complete upper kits are assembled with precision and designed for reliability, ensuring that you get the most out of your build.

Don’t settle for less—shop our premium selection of AR-15 uppers today and experience the difference in quality and performance. If you have any questions or need help selecting the perfect upper for your project, our team is here to assist you every step of the way!