Lightweight and modular, the RAD 9 is built with our next generation Flow-Baffle technology, substantially reducing gas blowback while maintaining superior pistol performance. You'll feel the difference the first time you shoot. OSSs innovative Flow-Baffle design is based on our patented and proven Flow-Through technology. Flow-Baffles direct expanding gas away from the bore-line, and radial grooves route them forward through the suppressor and away from the shooter.