Recon Mk2 Not Working

So I just bought a Recon Mk2, and I figured that it would be the new one that accepted the 18-dart stick mags.
unfortunately, I was wrong.

How can I contact Nerf to get me a compatible one, or how can I fix this via mods?

I spent $25 on something incompatible with 3/4s of what I use, I really need help here.