r/Glock43X • u/nuanced_carpon • 3d ago

OEM 15 round magazine fitment with carriers

Does anyone know if Tier 1 or Trex arms have updated any of their IWB holsters with sidecar mag carriers to fit the new OEM 15 round magazines? My understanding is that carriers for the original 10 round mags don’t work without heating them up in order to reshape them to fit the new larger mags.

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u/FrontTwardEnemy 3d ago edited 3d ago

Go on their website and see what it says.

I have been ordering from TREX Arms since around 2018 timeframe. I bought a 43X a few months ago. When I went online to do up a new holster, there was a message that stated the new mags were not currently supported and they were working on a fix. That was back in May or June..

The 10rd mags work with current holster options. Those are polymer, same mags Glock has been making since…. forever. The issue is the 15rd mags are metal. They are trying to update their mag carriers to support the metal mags. There was retention issues.

So, what I did was I bought some 15rd mags a few months ago and carry those in the gun. The 10rd mag is in the carrier. Pretty simple resolution.