AR-15 Rifle Kits

Whether you’re assembling a standard carbine, a short-barreled rifle (SBR), or an AR pistol, our selection meets diverse shooting needs, from the 16″ Dirty Bird AR-15 rifle kit to the compact NBS 7.5″ 300 BLK pistol kit. NBS offers high-quality, affordable options for budget-conscious builders, while Dirty Bird provides premium components for those seeking high-end features. Both brands are known for reliable performance, accuracy, and customizable platforms. Building an AR-15 from a kit gives you hands-on experience with firearm mechanics and allows for personalized customization. Whether you’re a novice or an experienced enthusiast, AR15Discounts.com delivers quality and affordability, offering these premium AR-15 rifle kits at competitive prices.

Browse our extensive inventory from NBS, Dirty Bird, and other trusted brands to find your ideal configuration and start your custom AR-15 or AR pistol build today.

Frequently Asked Questions about AR-15 Rifle Kits

• Do I need a firearms license to purchase an AR-15 rifle kit?
  No, and this is one of the reasons so many people love kits from AR15Discounts.com. A firearms license is not required to purchase an AR-15 rifle kit because these kits do not include the lower receiver, the only part of an AR-15 legally classified as a firearm. Without the lower receiver, these kits are considered just parts and can be shipped directly to you without an FFL. Instead, you’re getting a complete upper, bolt carrier group, charging handle, and everything you need to put together your registered lower receiver once you obtain it.
• Are AR-15 rifle kits legal in my state?
  The legality of AR-15 rifle kits varies by state. While these kits do not contain the lower receiver and are generally considered non-firearm parts, some states have restrictions on certain components, such as high-capacity magazines or specific barrel lengths. It’s essential to check your local laws before purchasing or assembling an AR-15 rifle kit.
• What tools are needed to assemble an AR-15 rifle kit?
  What’s great about these kits is that the upper itself is already complete and ready to attach to your lower once it is assembled. If you were building the entire rifle from scratch, this would be more challenging and require an investment in both knowledge and equipment. As for building out your lower, basic tools like screwdrivers, Allen wrenches, and punches are often sufficient, along with a bit of research on how everything goes together.
• Is it difficult to assemble an AR-15 rifle kit?
  Assembling an AR-15 rifle kit can be straightforward, especially with pre-assembled uppers included in many kits. Step-by-step guides and videos are widely available to simplify the process for beginners. Most find the build rewarding and manageable, even without prior gunsmithing experience. Keep in mind that your upper is already complete, allowing you to focus on the lower.
• Can I customize an AR-15 rifle kit during assembly?
  Yes, AR-15 rifle kits are highly customizable, especially when using AR15Discounts’ Kit Configurator. You can choose components like the stock, handguard, trigger, and muzzle device to fit your preferences. This customization flexibility is a key advantage of building from a kit versus purchasing a complete rifle.
• How long does it take to assemble an AR-15 rifle kit?
  Assembly time can vary based on experience and whether the upper receiver is pre-assembled. For a first-time builder, it may take a few hours. More experienced builders can typically complete an AR-15 kit in under an hour. This is because your focus is almost strictly on the lower in most cases.
• What’s the difference between a complete upper kit and a complete lower kit?
  A complete upper kit includes the upper receiver and related components like the barrel, handguard, and bolt carrier group. A complete lower kit includes the lower receiver parts like the trigger group, buffer system, and stock. When paired, they make a full rifle, but a complete lower kit still requires a serialized lower receiver, which is purchased separately.
• What caliber options are available for AR-15 rifle kits?
  AR-15 rifle kits are available in various calibers, including the popular 5.56 NATO/.223 Remington and other options like 300 Blackout and 6.5 Grendel. Each caliber has specific applications and benefits, allowing you to build a rifle tailored to your needs.
• Are AR-15 rifle kits compatible with other AR-15 parts?
  Yes, most AR-15 rifle kits are compatible with standard AR-15 components, allowing for easy customization or part replacement. It’s crucial to confirm compatibility, especially if mixing parts from different manufacturers, but the AR-15 platform is generally modular. That said, tolerance stacking can become an issue, and wise and experienced builders often advise that AR parts are not exactly like Legos.
• Is it legal to sell a completed AR-15 rifle that I assembled from a kit
  Federal laws allow private individuals to sell firearms they’ve built for personal use, provided they are not “engaged in the business” of selling firearms. However, some states have restrictions on selling homemade firearms. Always check state and federal regulations before selling a completed rifle.
• What is a “ghost gun,” and does building an AR-15 from a kit make it one?
  A “ghost gun” is a term used to describe a firearm without a serial number, often assembled using an unfinished lower receiver. Building an AR-15 from a kit does not make it a “ghost gun” as long as a legally serialized lower receiver is used. If an 80% lower is used, it may fall under the “ghost gun” classification, depending on local laws.
• Are there advantages to building an AR-15 from a kit versus buying a complete rifle?
  Building from a kit allows for greater customization, hands-on learning, and potential cost savings. It lets you tailor the rifle to your preferences and gain a deeper understanding of the firearm’s mechanics. However, buying a complete rifle can be quicker and may include a warranty.