The invention is a suppression device to eliminate flash, noise and smoke, collectively “gas” which is created by explosion of a high-powered rifle hammer striking a bullet, from escaping down a barrel of the rifle so as to expose a shooter's location. The device is physically located nearest to the receiver of the rifle. It operates by machine cutting the barrel to form a diverter which directs the gas into a chamber. Inside the chamber are five concentrically and longitudinal arrayed tubes. The gas travels a longer path than the bullet by passing through the tubes, echoing back and forth until dissipation of the gas.