Can you still use the plastic mags with the metal release, or do they get chewed up by it?
Assuming you aren't using the plastic ones except as spares that may never get used. I just use them very little.
I mean, metal to plastic, instead of plastic to plastic. Either way mags are consumables. I just haven't shot the plastic mags enough to see anything degrade.
I just wouldn't use them more than I would the metal ones.