The Maxim MXM-49710 MD9 K SPB is a purpose-built AR9-style semi-automatic rifle designed for both military and commercial markets. This firearm features a 4.50-inch free-floating barrel that ensures accuracy and consistent performance. The rifle is equipped with the MD Hatebrake for reduced recoil and enhanced control, a Radian charging handle for smooth operation, and ambidextrous magazine release for ease of use from either side. Its monolithic-like custom handguard offers increased comfort, versatility, and compatibility with M-Rax/M-Slot accessories, providing a stable platform for customization. The firearm accepts all Glock 9mm pattern magazines, including G19 and longer, making it compatible with a wide range of popular magazines. Specifications and Features: Caliber: 9mm Luger Action: Semi-Auto Barrel Length: 4.50 inches Weight: 5.50 lbs Overall Length: 17.25 inches Finish: Arid Brown Semi-automatic action with 9mm Luger caliber 4.50-inch free-floating barrel for accuracy Monolithic-style handguard compatible with M-Rax/M-Slot accessories Accepts Glock 9mm magazines, including G19 and longer Ambidextrous magazine release and sling mounts Last round hold open feature for easier reloads