I don't know if i'm posting this in the right spot but i bought a mayflower apc plate carrier and i'm a small guy so i bought the s/m medium and small cumber-bun. My question is what size plates do i get ? Also, what plates do i get, this is my first setup. I already own a haley startegic chest rig that's why i went in the way of mayflower, it just seemed logical. Any feed back would be awesome, i rely on this forum for everything

The forum you're looking for is under the "Armory" tab, if you look ^ up, it should be right under the "Stag Arms" logo in the site sponsor banner.  

From there, the second to the bottom forum is "Tactical Gear."  

Beyond that, plate carriers are generally sized according to the plate they accept, not the user size (though these often go together).  

A S/M PC should fit small or medium plates.  There's a good thread if you dig in that forum regarding plate sizing and placement as well to help you decide/determine which size plate you need.  

~Augee