I need to buy an AR-15 buttstock for cheap, it can be any stock that is made for an AR-15. I am trading my AR-15 lower for a complete ar, and the guy getting the lower wants a stock on it, the one I have on there is a Magpul M93 ($275 stock), so I need a cheapo one to put on the lower. Also, if you can take off my old stock and install the new one, I will pay you extra. Local in Portland/Vancouver, please. Thank you, let me know what you've got. Don't want to spend more than $35 total.