I bought this brand new and used it 3 times to get rid of squirrels and it works flawlessly. It really hits hard and kills in one shot. Having a magazine and just having to cycle after every shot is very nice and allows you to shoot much faster. It has had maybe 15 pellets shot through it. It requires a high power pump which is also shown in the pictures. The magazine slides onto the little magnet and so does the other little black piece that says. The little black piece is for single shot loading, you simply lay the pellet on it and cycle the gun. It is a red/green dot. There is a gauge on the pump and the gun to let you know how much air is in there. It says about 70 shots on a full tank but I never tested it.