The site where I found that is a human rights site. I do not have a problem with gun ownership. I think they should be licensed like cars and you should prove you know how to use one. I think you should be able to hunt and eat what you kill. I think that young people should be allowed to hunt, with adult supervision and proper training. I don't think that the gun in the photo should be used by civilians, let alone children. As you will see from their site, the womenfolk in his family are probably pretty well armed, so there is no need for little Johnny to be packing such serious heat.
I have found it helpful to do the stretching exercises my physical therapist recommends. Do some core strengthening exercises, such as the ones highlighted at The Mayo Clinic. By keeping your core strong, your back won't put itself in a position to cause that sciatica pain you are having.