Hi, I just bought an AR15 and already had a BSA Red Dot Scope. I'm currently getting an AR Riser to raise the scope a little to get in line with my front iron sight. Next weekend I'm traveling over 200 miles to the country to hang out with a friend that has started squirrel hunting. I don't have experience Varmint Hunting, but was wondering what everybody's opinion is on using the AR15 for Varmint Hunting. As I've seen, there are mixed opinions, and I'm aware the AR15 is great for multiple applications. How good is the AR15 as a Varmint Hunting Rifle? What about the ammo it uses (.223 Remington/5.56mm NATO)? (my friend claims he used his AK (7.62mm) to shoot a squirrel, and it turned out fine) Is there a large difference between different type of ammunition with hunting small games like Squirrel (Ball rounds, military ball rounds, target ammo, military target ammo, hollow points, soft points, ect.)? Also, I have a Red Dot Sight. Is this a pretty good optics to use. I know I might not be able to go a great distance away from a Varmint with this, but I'm thinking it can be accurate and very easy to use nonetheless. I'm not much of a scope person, and have experience with military Aimpoints. What are your opinions on this?