300 Blackout mags

[tlay]

I have a 300 blackout barrel on a pistol I built. The problem I am having is getting some mags to work. The bullets are wider than the 223 and they are jamming in some mags. I have heard that someone makes mags for the 300 blackout but can't find them. Does anyone know where I can find them?

 

[McE]

Any of the various aluminum mags will work, the ones that jam might be the PMAGs with the rib on the inside

 

[tlay]

All of the mags have a rib that rubs the bullets to keep them straight. Some are thicker than others. I have many different kinds and pmags seem to work better than others.

 

[alwaysoutdoors]

You shouldn't need a mag just for 300 blackout. My 5.56 mags work fine. They are P MAG.

 

[McE]

All of the mags have a rib that rubs the bullets to keep them straight. Some are thicker than others. I have many different kinds and pmags seem to work better than others.

Got a pic of this?
None of my bullets touch anything inside a magazine.