What are the requirements for AC/RC? I am E-5 (P) looking to go to Fort McCoy as a 12N.

Well, it depends. Are you a Vikings fan?

They're managed by your branch manager. They are a low priority fill and your branch manager will have to review your record. You almost always have to be KD complete for your rank. In your case, you would need two years of rated time serving in a E6/squad leader position.

I'm currently AC/RC at Fort McCoy. It's possible. Most of the slots are E6-7, and the majority of the BN's are only at 40-70% strength. I'd call your branch manger and have a talk.