AR-15 Upper Parts

AR-15 Upper Parts are a critical collection of components that ensure the smooth operation, reliability, and performance of your firearm. These parts include AR-15 Charging Handles, AR-15 Bolt Carrier Group, AR-15 Gas Systems, AR-15 Muzzle Devices, AR-15 Sights, AR-15 Scope Mounts, and AR15 Upper Small Parts & Accessories. Together, these AR-15 Upper Parts form the backbone of your upper assembly, allowing you to tailor performance to your specific needs.

Top Brands Offering AR-15 Upper Parts

Charging handles are essential for chambering rounds and clearing malfunctions. Options from Radian Weapons and Breek Arms offer ambidextrous control and smooth operation. These components improve overall handling and are especially valuable in tactical or competitive shooting environments.

The AR-15 Bolt Carrier Group is the heart of your rifle’s operation, cycling rounds and ejecting casings. We feature high-performance BCGs from Toolcraft and Ballistic Advantage, both known for durable finishes and precision machining that withstand extended use under harsh conditions.

AR-15 Gas Systems play a pivotal role in cycling reliability. Adjustable gas blocks from Superlative Arms help tune your rifle’s operation for reduced recoil and improved performance. Whether you’re running suppressed or tuning for competition, a well-matched gas system improves consistency.

For control and recoil mitigation, AR-15 Muzzle Devices are vital. Faxon Firearms and Breek Arms offer a wide range of flash hiders and compensators to improve shot control and accuracy. These components are easy to install and provide immediate handling benefits.

Accuracy depends heavily on sighting systems. AR-15 Sights and AR-15 Scope Mounts from Holosun and other trusted manufacturers offer quick target acquisition, reliability, and rugged designs. Whether you’re mounting red dots or LPVOs, secure optics mounting is critical for consistency.

Even the smallest components matter. AR15 Upper Small Parts & Accessories—like forward assists, dust covers, sling mounts, and screws—ensure everything functions in harmony. Magpul and similar brands produce enhanced accessories that add durability and ergonomic benefits to any build.

Explore All AR-15 Upper Parts Categories

Whether you’re starting from scratch or improving an existing build, our upper parts categories cover every component. Start with a durable, ergonomic option from our AR-15 Charging Handles section, where you’ll find ambidextrous options designed for fast manipulation under pressure.

Our selection of AR-15 Bolt Carrier Groups includes multiple finishes like nitride and phosphate, compatible with various calibers and performance goals. Builders focused on soft recoil and smoother cycling should explore AR-15 Gas Systems to optimize for suppressed use or fine-tuned reliability.

Looking to improve muzzle control? Visit our AR-15 Muzzle Devices category for precision-engineered compensators and flash hiders that help manage recoil and stay on target. Then complete your optic setup with rugged, repeatable AR-15 Scope Mounts and AR-15 Sights designed for fast engagement and dependable zero retention.

Don’t forget the finishing touches. AR15 Upper Small Parts & Accessories ensure proper assembly and functionality. From ejection port covers to forward assists, these components tie your upper assembly together with reliable fit and finish.

Choosing the Right AR-15 Upper Parts for Your Build

Every part of the upper receiver contributes to your rifle’s performance. A high-quality bolt carrier group ensures smooth cycling, while the right charging handle improves usability. Fine-tuned gas systems reduce wear and improve control. Muzzle devices help maintain accuracy during rapid fire. Reliable sights and mounts ensure fast target acquisition, and small parts provide the structure to hold it all together.

Arm or Ally proudly stocks premium AR-15 Upper Parts from Aero Precision, Faxon Firearms, Superlative Arms, Magpul, Toolcraft, Holosun, and many others.

We also offer our own in-house components that deliver reliable performance at excellent value. Whether you’re customizing for tactical use, range performance, or lightweight handling, our wide selection ensures you’ll find the right parts for your platform.

If you have any questions about AR-15 Upper Parts, reach out to us anytime.