buffer tube
my 15-22 has a mil spec. tube i just put a magpul stock on it and it is a perfect fit. the org. s&w stock that came on it was looseee.
Try an aftermarket stock. The OE stock on the 15-22 just might be for a commercial tube. That would explain all of the slop in the fit. I picked up a Magpul MOE for a mil-spec tube and it fits like a glove. No play at all.
my 15-22 has a mil spec. tube i just put a magpul stock on it and it is a perfect fit. the org. s&w stock that came on it was looseee.