The Maxim Defense MD:9 Series is built to bring cutting-edge performance and modern design to the AR-9 platform. Engineered for both military and commercial use, every MD:9 rifle, pistol, and SBR delivers superior handling, premium components, and dependable 9mm firepower. From the compact MD:9-K to the full-length MD:9 Carbine, the entire lineup features our free-floating barrels, custom M-RAX™/M-SLOT™ compatible handguards, and monolithic-style upper profiles for improved accuracy, durability, and adaptability.

Whether you're running a short barrel rifle for CQB, a brace-equipped pistol, or a suppressed carbine, the MD:9 series is designed for smooth operation, precision, and total control across any mission or environment.