You can put a slide fire on your ar-15 for deer hunting but I'm not sure if a norinco will be as good as a rock river arms ar. If you want a sniper rifle, just buy a rem700 and put on a NC star scope, I think they will hold a zero just as well as any other. I find that if you use incindiary rounds you can also be assured that they will stop a grizzly bear, polar bear, black bear and even pandas and beavers. Both firearms will surely allow you to shoot into space if you climb to the top of mt. Everest.