AR-15 for Sale | Rifles, Pistols & Parts
Buy new and used AR-15 rifles, pistols, uppers, lowers, and parts on GunBroker. Browse listings for sale from top sellers across popular AR-15 categories, bid on auctions, or Buy Now. Find the right AR-15 setup for your next range day or build project.
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ar 15 in guns & firearms
Explore the AR-15 Platform
The AR-15 is one of the most versatile rifle platforms available, known for its accuracy, modular design, and wide range of calibers. On GunBroker, buyers can browse thousands of AR-15 rifles, uppers, lowers, and AR parts from top manufacturers and sellers.
- Complete AR-15 rifles
- AR-15 uppers and lowers
- New and used AR-15 parts
- Options for factory builds and custom configurations
Whether you're shopping for a complete rifle or sourcing components for a build, the AR-15 platform offers flexibility across a wide range of setups.
Popular AR-15 Configurations
AR-15s are available in multiple configurations to suit different shooting preferences and use cases.
- 16-inch carbines for general-purpose use
- Mid-length rifles for balanced handling
- AR-15 pistols for compact setups
- 18- to 20-inch rifles for extended-range shooting
GunBroker listings include entry-level models, match-grade rifles, and upgrade components such as barrels, triggers, and optics.
Trusted AR-15 Brands
Buyers can shop AR-15 rifles and components from widely recognized manufacturers, including Palmetto State Armory, Daniel Defense, and Colt.
Listings range from budget-friendly AR-15 models to premium rifles and custom components from a broad network of sellers.
Calibers and Versatility
The AR-15 is most commonly chambered in 5.56 NATO and .223 Remington, offering a balance of performance and manageable recoil.
- 5.56 NATO / .223 Remington for standard AR-15 builds
- .300 Blackout for specialized configurations
- Modular compatibility across a range of components
Thanks to its modular design, the AR-15 can be adapted for a variety of roles using different uppers, barrels, and parts.
AR-15 Parts and Upgrades
Customizing an AR-15 is a major reason for the platform’s popularity. Buyers can shop a wide range of AR-15 parts, including stripped lowers, complete uppers, barrels, stocks, triggers, and build kits.
- Stripped and complete lowers
- Build kits and parts sets
- Triggers, barrels, and stocks
- Upgrade components for customization and repair
Why the AR-15 Remains Popular
The AR-15 remains one of the most popular rifle platforms because of its modularity, low recoil, and accuracy. Its adaptable design supports a wide variety of configurations for target shooting, competition, and hunting applications.
AR-15 Frequently Asked Questions
What is an AR-15 rifle?
An AR-15 is a lightweight, semi-automatic rifle with a modular design that allows users to customize parts and configurations. Unlike military rifles such as the M4 or M16, AR-15 rifles are not fully automatic.
What calibers does an AR-15 use?
Most AR-15 rifles are chambered in 5.56 NATO or .223 Remington. The platform also supports calibers such as .300 Blackout because of its modular design.
What is the difference between an AR-15 and an M4?
The main difference is firing capability. AR-15 rifles are semi-automatic, while the military M4 is select-fire and can operate in semi-automatic, burst-fire, or automatic modes.
Can I build my own AR-15?
Many buyers source individual parts to assemble an AR-15. The lower receiver is the serialized component and must be transferred through a licensed FFL dealer, while most other parts are sold separately.
Is it legal to buy an AR-15?
Laws vary by state and locality. Some jurisdictions restrict certain configurations or features, so buyers should review applicable regulations before purchasing.
Find Your Next AR-15 on GunBroker
Buyers can compare thousands of AR-15 rifles, pistols, and parts from a wide range of sellers in one marketplace, whether shopping for a lightweight carbine, a precision setup, or components for a build.