Maxim Defense MDX 516 5.56 NATO Semi-Auto Rifle 16″ Barrel 30-Round Black

The Maxim Defense MDX 516 is a precision-engineered semi-automatic rifle chambered in 5.56 NATO, purpose-built for shooters who demand uncompromising performance and modern tactical capability. Featuring a 16-inch barrel and a 30-round capacity, this rifle delivers the accuracy, reliability, and versatility demanded by competitive shooters, serious enthusiasts, and home defenders alike.

Maxim Defense has earned a reputation for building some of the most innovative and high-quality firearms on the market today, and the MDX 516 is no exception. Constructed with premium materials and refined ergonomics, this rifle is designed to perform flawlessly in a wide range of conditions and applications — from the range to the field.

Key Features:
• Chambered in 5.56 NATO
• 16″ barrel for optimal velocity and handling
• 30-round magazine capacity
• Matte black finish for durability and a tactical aesthetic
• Built to Maxim Defense’s exacting quality standards
• Ideal for home defense, range training, and competition use

At Deep Roots Rifle Co, we carry a curated selection of premium firearms from industry-leading manufacturers like Maxim Defense. Whether you’re a first-time buyer or a seasoned shooter looking to add a high-performance rifle to your collection, our knowledgeable staff is here to help you make the right choice.

Order online with fast shipping to your local FFL dealer, or stop by our gun store in Eustis, Florida, to see our current inventory and speak with our team of firearms experts in person.