Someone on another forum mentioned that the collapsible stock of the Cyclone tends to "rattle." Since one part slides over another it can be moved and does make some noise. While hardly noticeable, a close deer could hear it. But there is a fix, using a piece of duct tape about 3'' long and 2" wide. Determine where you want the stock most of the time, then extend the stock all the way. Apply the tape to the top and about half way down each side of the fixed portion of the stock, just behind where the end of the adjustable part will be located when it's where you will want it. Don't extend the tape too far down the sides of the fixed stock or the sliding part won't fit over it. Smooth the tape into place and slide the extension over it so the tape doesn't show. Walla, noisy stock fixed and still can be moved. Not exactly high tech but very effective.