I have a PSA AR-10 and want to change the stock. It currently has a Magpul collapsible stock and I would like to swap it out to a fixed stock. Anyone know if a standard A2 stock and spring/buffer will fit? The gun functions fine and has no operating problems, I'm just not happy with the sloppy-ness of the stock to tube fit. I'm tossing up the idea of either the RRA 308 OPERATOR A2 STOCK or the Magpul MOE Rifle Stock.