9mm AR ammo?

[anyracoon]

I'm in the process of building a 9mm AR and was wondering what the rest of you are shooting or reloading in yours?

I told my Wife," If you haven't grown up by the time you reach 60, you don't have to!'"

[Blue]

I tried shooting 115gr Magtech ammo out of mine with ill results. I'm hoping its just a buffer swap that fixes the problem.