Which mags for 9mm AR's?

[technetium-99m]

Someone point me in the right direction for 9mm AR mags. I'm fine with modifying a pile of UZI mags if that's the best route.

 

[Matt1911]

I had good luck with C-products 32 round mags.
I have a few UZI mags in the shop that I never got the notches cut, so I couldn't say how well they worked. I've always heard good things though.

 

[Ipsilateral]

Metalform, or Brownells has metalforms that they've branded as their own for a few bucks cheaper.

 

[Rustyzx9]

I had the best luck with the uzi mags....

 

[MrTheBigOx]

Mine takes Glock mags (YAY)