Quoted:
Im having trouble choosing a optic. So far it is between the m3 MR, the m4, and the micro.

I would get the m4 because of the AA battries but at the moment it is out of stock. Then I wouldnt mind the m3 ( I actually like the looks of this one the best) but I dont know about the CR2 battries (can any one inform me?) . I dont know if these are weird/expensive battries.

I looked on the sight and alittle bit here but couldnt find what kind of batteries the Micros took. What are they?

Thank you.