I'm with Mountainman,What the hell!
Why would you want a semi-auto platform to be a bolt action? And,if you're going to be hunting in Alaska,the smallest rifle caliber I'd want is a 30/06. It won't fit in an AR platform,Although there is a company that makes long action AR10 style platform weapons,but they start off around $5000.00,and go up depending on what you want,but it wouldn't be a bolt action.
Safety Harbor does make a 50BMG upper for a AR15 lower that is a bolt action,but I don't think you would like to hunt with the big 50!
Texas State Rifle Association
North American Hunting Club