Grabbing mags for your Radial Delayed Blowback 9mm. These Gen II 9mm magazines are designed for Mk4/AR-15 lower receivers with a CMMG 9mm Radial Delayed Blowback upper, offering more capacity than the Gen 1 mags 33-round versus 30. With the same iconic CMMG styling, these mags combine enhanced performance, durability and a sleek design to ensure a smooth, reliable shooting experience. Perfect for shooters looking to maximize capacity and functionality. Exterior dimensions match standard 5.56x45mm AR-15 magazines for seamless compatibility with existing mag pouches and carriers