Plus 1 for what all have said above. I am usingit on a Pulsar 22 And on power setting 4 I know I won't put a hole in a farmer's barn. When I first shot it on power 4 it was so quiet, no mechanicals bouncing around inside, I thought something was wrong. I put a piece of paper in front of the muzzle and fired and sure enough air was coming out.
something others haven't talked about is the install. Watch his video and go really slow and even if you are a ham fist you will probably be succesful. You will be warned to make sure you turn the unit off by moving the safety to the on/safe position or the gun will not automatically turn off like with the stock board. OhWell! I needed practice changing batteries anyway. I bet I am the only user who has done that. Also learned to check it before I go our pesting. When I first got it I diidn/t do that and got to the farm and the batteries were dead. My bad. should've checked. Used a back up rifle then.