I have two Gamo air rifles and they both are ok except that the Gamo Scopes are JUNK. They won't hold up to the extreme shock waves that a springer (Even EGT) produce and the reticles (cross hairs) will fall apart and become inaccurate and non adjustable after a while. I have the Gamo Whisper Fusion Elite and the Gamo Bone Collector. If you watch the stores you will notice that Gamo comes out with a new version of the old air rifles all the time. They have so many models that you can't shake a stick at them. I guess they figure that when people find out that they don't work they think that changing the name and adding this or that will fool more people. Now the gun themselves work fine. I'd bet that they work with manual sights OK.

And when they are new and the scope has not fallen apart yet then they shot pretty true and accurate. But I've had three Gamo Scopes crap out on me now. I going to try a Walther's Scope and if that one falls apart I'll go buy a Leapers scope as they are said to be built to withstand the shock of the IGT and springer type air rifles. The thing is with the IGT and Springer guns is that there is a forward and then a back wards shock wave that tends to destroy cheap scopes.

I have shot a lot of squirrels when the Gamo Bone Collector was new. I dispatched lots of fox squirrels in my back yard that were raiding my bird feeders. It was deadly out to about 40 yards if you sighted it in for that distance.

But one word of advise. If you want it to be quiet shoot the heavier and slower lead pellets. 0.17 caliber is what I shoot. The alloy pellets are fast and loud and less accurate IMHO. I've tested them and they tend to fly every which way at an distance over 40 yards. They are less precise and squirrely. Sorry for the pun. Anything that's over 1300 fps is going to make a loud crack that will sound like a 22 short rim fire rifle going off. If you keep the speed below the speed of sound there will be no Loud Crack Sounds.

The problem is that most of the Gamo Air rifles come with a Gamo Scope on them or in the box. And you must use a torque wrench to mount the screws for the scope mounts and the scope rings or the threads will strip if you over torque them. They are not the best metal in the world. I also used Blue Loc tite on the threads when I set them in the place and torqued them down. About 20 ft pounds of torque is required for the scope ring screws. The scope stop is critical too. I've had Gamo Scopes go backwards on the rifle receiver with each shot until the back rings were off the back of the receiver. So I installed another separate scope stop on the receiver. You can buy those from the Gamo online store separately. They have a hole on the top of the receiver that accepts the set bolt on the scope stops and the scope stops that's built into the scope mounts and or rings.