cc-settings-icon BUILD AT HOME
80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states.
We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum.
We also offer our patented AR-15 and .308 Easy Jigs® which is the first 80% lower jig that makes it ridiculously easy for a non-machinist to finish their 80% lower in under 1 hour with no drill press required.
Products manufactured by 80% Arms carry a lifetime warranty against manufacturing defects. We will promptly replace or repair any product that we determine to be defective.

Premium Upgrades


At 80% Arms, we are dedicated to providing premium accessories that enhance the performance of your firearms, including your own 80% pistol. Our selection of high-quality products includes jigs, such as the Infinity Jig, which is made from top-quality materials like 6061 aluminum and stainless steel. This modular jig enables you to switch between V1 and MOD1 frames with ease, and its self-centering mechanism ensures precise and consistent machining results. We also offer Billet Grips made from high-quality billet aluminum, which provide a comfortable and secure grip and are available in various colors and finishes to customize your Glock pistol. Our Billet Grips feature a flared magwell and are built to last, providing reliability and consistent performance in all shooting conditions.

If you're looking for aftermarket parts for your Glock or 80% polymer pistol, we are excited to introduce our customers to Smith Defense products, a leading manufacturer of high-quality firearms parts and accessories. Their commitment to quality and innovation aligns with our values at 80% Arms, making them a valuable addition to our product lineup. We offer fast shipping on all our products, including 80% lowers, parts, and tools. Our products are depicted and presented accurately, ensuring that our customers receive reliable sources of information before purchasing.

We understand that state and federal laws can be complicated, and we encourage our customers to seek legal counsel before purchasing our products. We also offer 80% lower receivers that are federally registered trademarks, ensuring that you're receiving a reliable source for your firearm. Our products are designed to help you save money while creating a personalized  pistol that fits your shooting needs. We offer a range of accessories, including a CNC’d locking block rail system and rear rail module to enhance your shooting experience.

Please note that some products, such as polymer 80% lowers, may be subject to specific state laws. For example, in Rhode Island, you must have a local FFL perform a background check before purchasing a 80% polymer lower. We strongly encourage you to check your state's laws before purchasing a frame.

Overall, we are committed to providing our customers with high-quality products that enhance their shooting experience. Whether you're a casual shooter or a professional, our products, including those for Glock pistols and AR-15s, are designed to deliver superior performance and functionality. While some of our products may be on the pricier side, we believe they are worth the investment, and we offer fast shipping to ensure you receive your order promptly.