The Gamo Whisper Fusion Mach 1 is equipped with the IGT Mach 1 power plant"" the most powerful gas piston technology from Gamo. It shoots a pellet at up to 1""420 fps (.177 Cal) or 1""020 fps (.22 Cal.) thanks to the larger 33mm cylinder. This air rifle also features Whisper Fusion sound dampening"" the quietest noise reduction technology patented by Gamo. The pellet goes through two different chambers"" compressing and preventing noise expansion. Combining Whisper Fusion and IGT Mach 1 technologies makes this rifle quiet"" powerful and accurate. The IGT MACH 1 also does not produce the vibration of the traditional spring piston. The air rifle is equipped with a Gamo 3-9x40 scope. The synthetic stock has a comfortable"" ambidextrous cheek piece. The Gamo Whisper Fusion Mach 1 also features the CAT (Custom Action Trigger)"" which allows you to adjust the 1st and 2nd stage to your preference. It also features the Recoil Reducing Rail (RRR) that absorbs the recoil and reduces the stress on the scope by almost 100 percent.