Couple questions on the smith 15-22s. I have a basic model and my kids love it as do I, in fact its so popular in the family I am going to buy more of them. My questions are simply this- the higher end precision shop models, are they really worth the extra price tag compared to the standard model and second can a magpul PRS stock be placed on one. The next purchase will be for me only as a training platform for my precision ARs which both wear the PRS. The standard model will be for the kids to shoot. Thanks