Maxim Defense MXM49005 Tumble Upon Impact (TUI) Subsonic 300Blackout 190gr Solid Copper Spun 20 Per Box/25 Case

The Maxim Defense .300 Blackout 190gr TUI Subsonic Short Barrel Ammunition is a match-grade, lead-free rifle round designed for shooters who prioritize quiet operation, accuracy, and controlled terminal performance. Built around a Solid Copper Spun (SCS) projectile and patented Tumble Upon Impact (TUI) this ammunition delivers consistent penetration and effective energy transfer at subsonic velocities. Optimized for suppressed rifles and short-barrel platforms, it provides reliable cycling, minimal recoil, and proven accuracy—making it an excellent choice for defensive use, professional applications, and suppressed shooting environments.