hey yall saw what appeared to be a mcmillan adjustable stock comb/cheek riser thingy at a gunshop the other day and got to wondering if that would mount to a fiber m1a stock by just poppin a few holes. that rifle needs a high comb for optics and right now just has a stock pouch with puss pads built up under it for height. has anyone tried this and know if its a good option?