I am joining the Reserves and my MOS is going to be 2311, Ammo Tech. If you dont know, in the reserves you have little to no choice on your MOS depending on where you live. So my question is, once I am through with college I should have about 2 years left as a reservist. How hard is it to switch your MOS and go into active duty for the remainder of your time? I would like to go into Infantry after college.