I have a Vickers magazine release in my Gen4 23. I carry that everyday with no issues of accidentally dropping the magazine. The factory extended release in my Gen3's gave me many accidental drops. I stopped using them. Lol.
I have a Gen4 factory extended release in my G35. I've used that in IDPA several times. It isn't as pronounced as the Vickers, but still works well.
As for which one to get its personal preference. I like the Vickers in my EDC, but for IDPA SSP I use the factory to stay legal.
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