MDI is proud to announce the release of its latest innovation in firearm accessories – the 30-round Polymer Magazine for AR15/M4 style platforms (STANAG 4179 compliant – compatible with AR15/M4 style platforms). Designed and manufactured in Slovakia, this magazine combines cutting-edge engineering with durable materials to deliver reliable performance in even the harshest conditions.
NEW PRODUCT: 30-Round Polymer AR Magazine

Key Features
- 30-round capacity for 5.56x45mm / .223 Remington calibers
- Lightweight at only 140g
- 360° stainless steel feed lips – prevent bulging even when overfilled
- Anti-tilt follower – ensures smooth and reliable feeding
- Reinforced, durable floorplate with optional drain holes for maritime use
- Anti-slip grip design for enhanced handling
Engineering Excellence
The MDI 30-round Polymer AR Magazine is built with uncompromising quality. Its feed lips feature a full 360° stainless steel design, delivering unmatched durability and preventing deformation under stress. The anti-tilt follower guarantees flawless feeding, ensuring reliability in critical moments. Every detail, from the reinforced floorplate to the anti-slip grip, has been carefully designed with the end-user in mind.
Customization Options
At MDI, we understand that every mission and operator has unique requirements. That’s why our magazines are fully customizable, from colors and finishes to private labeling. Customers can choose from hardened steel or stainless steel components, various protective finishes such as cold bluing, powder coating, or chrome plating, and multiple floorplate configurations.
Ready for the Field
Whether you are a military professional, law enforcement officer, or dedicated sport shooter, the new MDI 30-round Polymer AR Magazine is engineered to meet your needs. Durable, lightweight, and reliable, it is the magazine you can trust in every situation.


