will an ace skeleton stock fit on the 15-22, i know that we cant change the buffer tube area but will it fit over the existing tube? i was looking at the longer a2 stock.

I don't think it does. It is meant to fit on a fixed stock receiver extension.

KBK

It won't fit without some permanent (non-reversible) modifications. I put the Ace Entry (short) Stock on my 15-22 and think it's fantastic. The photo and basic steps are in the picture thread page 57, post number 2863.