I have a 870 with a knoxx stock and under close inspection I have a question that is really bothering me. After taking off the stock exposing the buffer tube, I noticed that there are two pieces to the buffer tube. One is the actual tube and the other is the piece that has the bottom lugs. My question is that it looks like the piece with the lugs is able to be moved forward or back depending if you want more adjustment. I will post a picture maybe I am just going crazy. Anyone else see this?
Thanks
A guy with short arms.
Thanks
A guy with short arms.

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