AR Parts and AR Accessories

When building or upgrading your AR platform, the right components make all the difference. At Arm or Ally, we supply a full range of AR parts and accessories to help builders, enthusiasts, and competitive shooters achieve unmatched performance and reliability. Whether you’re assembling your first rifle or refining a precision build, you’ll find high-quality parts engineered for fit, function, and long-term durability.

AR Upper Receivers

The upper receiver is the heart of your AR build. We offer a variety of AR upper receivers for both AR-15 and AR-10 platforms, available in stripped and complete configurations. Each receiver is built for precision alignment and consistent performance — perfect for tactical setups, match-grade builds, or duty-ready rifles.

AR Lower Receivers

The lower receiver forms the foundation of your rifle, housing essential components like the trigger, safety selector, and magazine well. Choose from our collection of AR-15 and AR-10 lower receivers in both mil-spec and enhanced styles. With various finishes and features, you can select a lower that matches your build’s aesthetics and function, ensuring a solid and dependable platform.

AR Barrels

Accuracy starts with the barrel. Our wide selection of AR barrels covers multiple calibers and lengths for any shooting discipline. From rifle-length barrels built for precision and distance to compact pistol barrels for CQB setups, we carry trusted options that deliver exceptional consistency and performance.

AR Handguards

Handguards play a key role in both comfort and control. Our free-floating and quad rail options not only protect your hands from barrel heat but also improve accuracy and customization potential. With designs from top names like Magpul and Aero Precision, you can mount optics, lights, and accessories while maintaining a streamlined profile and professional look.

AR Triggers

A quality trigger transforms your shooting experience. Our selection of AR triggers includes precision-engineered models from Timney, CMC, and Rise Armament. Choose from crisp single-stage or refined two-stage triggers — each designed to deliver a clean break and predictable performance, shot after shot.

AR Furniture

Comfort, control, and balance come from the right furniture setup. Explore our variety of AR furniture — stocks, grips, and buffers — from trusted brands like Magpul, Luth-AR, and SB Tactical. Whether optimizing for competition, comfort, or tactical use, these components enhance your rifle’s ergonomics and handling.

Buffer Kits and Components

Reliable cycling depends on a balanced buffer system. Our buffer kits, tubes, and springs ensure smooth operation across AR-15 and AR-10 platforms. Each part is built to maintain proper function and minimize recoil, keeping your rifle consistent and reliable under all conditions.

Small Parts and Accessories

Every build relies on the details. From pins and detents to springs and selectors, our small parts and accessories provide the finishing touches that bring your AR to life. These precision components are sourced from manufacturers you trust, ensuring long-term durability and flawless performance.

Need Help With Your Build?

If you’re new to AR-10 or AR-15 builds — or simply need expert advice — we’re always here to help. Our team understands AR platforms inside and out and can guide you to the right parts and accessories to complete your next project with confidence.