Kicking the idea around buying or trying to build an upper for my AR-10 and going for a .22-250. I am thinking about either a 22" or 24" stainless steel barrel or possible a carbon fiber wrapped barrel if someone makes one. Has anyone does this before or is there anyone making uppers in this caliber? The will be for coyotes, foxes, groundhogs and possibly pigs if I get back to Florida next year